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Nonlocal Gravity - Bahram Mashhoon - Bog - Oxford University Press - Plusbog.dk

Nonlocal Gravity - Bahram Mashhoon - Bog - Oxford University Press - Plusbog.dk

Relativity theory is based on a postulate of locality, which means that the past history of the observer is not directly taken into account. This book argues that the past history should be taken into account. In this way, nonlocality---in the sense of history dependence---is introduced into relativity theory. The deep connection between inertia and gravitation suggests that gravity could be nonlocal, and in nonlocal gravity the fading gravitational memory of past events must then be taken into account. Along this line of thought, a classical nonlocal generalization of Einstein''s theory of gravitation has recently been developed.A significant consequence of this theory is that the nonlocal aspect of gravity appears to simulate dark matter. According to nonlocal gravity theory, what astronomers attribute to dark matter should instead be due to the nonlocality of gravitation. Nonlocality dominates on the scale of galaxies and beyond. Memory fades with time; therefore, the nonlocal aspect of gravity becomes weaker as the universe expands.The implications of nonlocal gravity are explored in this book for gravitational lensing, gravitational radiation, the gravitational physics of the Solar System and the internal dynamics of nearby galaxies, as well as clusters of galaxies. This approach is extended to nonlocal Newtonian cosmology, where the attraction of gravity fades with the expansion of the universe. Thus far, scientists have only compared some of the consequences of nonlocal gravity with astronomical observations.

DKK 1049.00
1

Gravity - Timothy (lecturer In Theoretical Cosmology Clifton - Bog - Oxford University Press - Plusbog.dk

Gravity - Timothy (lecturer In Theoretical Cosmology Clifton - Bog - Oxford University Press - Plusbog.dk

Gravity is one of the four fundamental interactions that exist in nature. It also has the distinction of being the oldest, weakest, and most difficult force to quantize. Understanding gravity is not only essential for understanding the motion of objects on Earth, but also the motion of all celestial objects, and even the expansion of the Universe itself. It was the study of gravity that led Einstein to his profound realisations about the nature of space and time. Gravity is not only universal, it is also essential for understanding the behaviour of the Universe, and all astrophysical bodies within it. In this Very Short Introduction Timothy Clifton looks at the development of our understanding of gravity since the early observations of Kepler and Newtonian theory. He discusses Einstein''s theory of gravity, which now supplants Newton''s, showing how it allows us to understand why the frequency of light changes as it passes through a gravitational field, why GPS satellites need their clocks corrected as they orbit the Earth, and why the orbits of distant neutron stars speed up. Today, almost 100 years after Einstein published his theory of gravity, we have even detected the waves of gravitational radiation that he predicted. Clifton concludes by considering the testing and application of general relativity in astrophysics and cosmology, and looks at dark energy and efforts such as string theory to combine gravity with quantum mechanics.ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

DKK 119.00
1

Gravity at the International Criminal Court - Priya Urs - Bog - Oxford University Press - Plusbog.dk

Gravity at the International Criminal Court - Priya Urs - Bog - Oxford University Press - Plusbog.dk

The gravity of a crime or case features in various international and national legal frameworks for the investigation and prosecution of international crimes. At the International Criminal Court (ICC), ''sufficient gravity'' is a requirement for the admissibility of a case specified in Article 17(1)(d) of the Rome Statute. The open-textured nature of the provision leaves the manner of its application and, ultimately, its purpose in the context of the Prosecutor''s decisions whether to investigate and prosecute, open to discussion.Set against the backdrop of ongoing debates on how to justify selective investigations and prosecutions at the Court, Gravity at the International Criminal Court: Admissibility and Prosecutorial Discretion addresses the question of how the gravity criterion is to be applied in the context of the Prosecutor''s respective decisions whether to investigate and prosecute. It argues that the purpose of the gravity criterion in this context is the allocation of investigative and prosecutorial resources.First, identifying appropriate indicators of gravity, the book contends that the application of Article 17(1)(d) requires a subjective assessment that involves the exercise of discretion. Second, by clarifying the respective roles of the Prosecutor and the Pre-Trial Chambers of the Court in the assessment of gravity in different contexts, it argues in favour of wide prosecutorial discretion in the making of this assessment compared with the limited powers of judicial oversight conferred on the Pre-Trial Chamber.Timely and thorough, Gravity at the International Criminal Court proposes a more coherent and persuasive application of the criterion, contextualizing and comparing the ICC''s approach in relation to other courts and bodies of law including international human rights law, international investment law, and international trade law.

DKK 1007.00
1

Gravity: From Falling Apples to Supermassive Black Holes - Nicholas (director Mee - Bog - Oxford University Press - Plusbog.dk

Gravity: From Falling Apples to Supermassive Black Holes - Nicholas (director Mee - Bog - Oxford University Press - Plusbog.dk

''Includes exciting recent advances in studying gravity and its cosmic manifestations.'' Lord Martin Rees, Astronomer Royal, former President of the Royal SocietyA fascinating historical account of how we have reached our current understanding of gravity.There have been sensational developments in gravitational physics in recent years. The detection of gravitational waves - ripples in the fabric of space - has opened a new window on the universe. These waves are produced by the most cataclysmic events in the universe - the collisions and mergers of black holes and neutron stars. There have also been great strides in our understanding of supermassive black holes. We now know that a black hole with a gargantuan mass lies at the heart of every galaxy, and we even have an image of one such beast. Gravity: From Falling Apples to Supermassive Black Holes provides an engaging and accessible account of how we have reached our current understanding of gravity and places these amazing discoveries in their true context.Gravity: From Falling Apples to Supermassive Black Holes is written in a captivating historical style with stories about the researchers of the past and present that illuminate many key ideas in astronomy and physics. The historical material leads from discussions of the early cosmologies to the great breakthroughs of Tycho and Kepler. We then consider Galileo''s contributions to astronomy and mechanics, and the significance of Jeremiah Horrocks''s ideas to the Newtonian revolution that would follow. Newton''s theories brought about a new scientific age and his description of gravity was unrivalled for over two centuries until it was superseded by Einstein''s description in terms of curved spacetime. The outlandish predictions of Einstein''s theory have been confirmed again and again, including black holes and gravitational waves. Finally, we move on to more speculative ideas including Hawking radiation and primordial black holes and attempts to find a quantum theory of gravity.

DKK 264.00
1

Background Independence in Classical and Quantum Gravity - Dr James Read - Bog - Oxford University Press - Plusbog.dk

Background Independence in Classical and Quantum Gravity - Dr James Read - Bog - Oxford University Press - Plusbog.dk

It is often claimed that Einstein''s magnum opus---his 1915 theory of General Relativity---is distinguished from other theories of space and time in virtue of its background independence. It''s also often claimed that background independence is an essential feature of any quantum theory of gravity. But are these claims true? This book aspires to offer definitive answers to both of these questions, by (a) charting the space of possible definitions of background independence, and (b) applying said definitions to various classical and quantum theories of gravity. The outcome, in brief, is as follows: General Relativity is not unique by virtue of its background independence (and, indeed, fails to be background independent on some popular definitions); moreover, the situation in the case of quantum theories of gravity is delicate, because (i) there are viable such theories which (by some accounts, at least) fail to be background independent, but also (ii) theories (e.g. perturbative string theory) which have often been dismissed for (allegedly) being background dependent in fact, on many accounts, are better classified as background independent. In giving these answers in rigorous detail, this book seeks to elevate the standards and generality of future discussions of background independence in the foundations of spacetime theories.

DKK 795.00
1

Gravity! - Pierre (professor Binetruy - Bog - Oxford University Press - Plusbog.dk

Gravity! - Pierre (professor Binetruy - Bog - Oxford University Press - Plusbog.dk

What force do the Big Bang, the expansion of the Universe, dark matter and dark energy, black holes, and gravitational waves all have in common? This book uncovers gravity as a key to understanding these fascinating phenomena that have so captivated public interest in recent years. Readers will discover the latest findings on how this familiar force in our everyday lives powers the most colossal changes in the Universe. Written by the widely recognized French public scientist and leading astrophysicist Pierre Binétruy, the book also explains the recent experimental confirmation of the existence of gravitational waves.

DKK 292.00
1

Shocking the Conscience of Humanity - Margaret Deguzman - Bog - Oxford University Press - Plusbog.dk

Shocking the Conscience of Humanity - Margaret Deguzman - Bog - Oxford University Press - Plusbog.dk

The most commonly cited justification for international criminal law is that it addresses crimes of such gravity that they "shock the conscience of humanity." From decisions about how to define crimes and when to exercise jurisdiction, to limitations on defences and sentencing determinations, gravity rhetoric permeates the discourse of international criminal law. Yet the concept of gravity has thus far remained highly undertheorized.This book uncovers the consequences for the regime''s legitimacy of its heavy reliance on the poorly understood idea of gravity. Margaret M. deGuzman argues that gravity''s ambiguity may at times enable a thin consensus to emerge around decisions, such as the creation of an institution or the definition of a crime, but that, increasingly, it undermines efforts to build a strong and resilient global justice community. The book suggests ways to reconceptualize gravity in line with global values and goals to better support the long-term legitimacy of international criminal law.

DKK 344.00
1

Shocking the Conscience of Humanity - Margaret M. (professor Of Law And Co Director Of The Institute For International Law And Public Policy Deguzman

Shocking the Conscience of Humanity - Margaret M. (professor Of Law And Co Director Of The Institute For International Law And Public Policy Deguzman

The most commonly cited justification for international criminal law is that it addresses crimes of such gravity that they "shock the conscience of humanity." From decisions about how to define crimes and when to exercise jurisdiction, to limitations on defences and sentencing determinations, gravity rhetoric permeates the discourse of international criminal law. Yet the concept of gravity has thus far remained highly undertheorized.This book uncovers the consequences for the regime''s legitimacy of its heavy reliance on the poorly understood idea of gravity. Margaret M. deGuzman argues that gravity''s ambiguity may at times enable a thin consensus to emerge around decisions, such as the creation of an institution or the definition of a crime, but that, increasingly, it undermines efforts to build a strong and resilient global justice community. The book suggests ways to reconceptualize gravity in line with global values and goals to better support the long-term legitimacy of international criminal law.

DKK 1136.00
1

Philosophy Beyond Spacetime - - Bog - Oxford University Press - Plusbog.dk

Philosophy Beyond Spacetime - - Bog - Oxford University Press - Plusbog.dk

Quantum gravity seeks a unified theory in which quantum matter is dynamically related to generally relativistic spacetime. Although a continuing work in progress, research programmes in the field such as string theory, loop quantum gravity, and causal set theory make it clear that a successful theory of quantum gravity will raise important challenges to our conceptions of space, time, and matter-perhaps abolishing them altogether as fundamental entities. But just as important, there is good reason to think that some of the problems in finding a theory of quantum gravity are themselves conceptual, in need of philosophical analysis. Philosophy Beyond Spacetime: Implications from Quantum Gravity assembles original papers from philosophers (and one physicist), establishing a definitive statement of the current state of play, on which future research into this area can build. Aiming to expand knowledge and understanding of the philosophy of quantum gravity, it emphasizes how debates in metaphysics--regarding emergence, composition, or grounding for example--shed light on the conceptual questions of quantum gravity. And conversely, how quantum theories of space and time call into question philosophical views grounded in classical spacetime. Furthermore, the philosophy of quantum gravity raises methodological questions, for instance concerning the relation between physics and metaphysics. The essays have been chosen to demonstrate to a wide range of philosophers the significance of the subject, as well as making novel contributions to it.

DKK 805.00
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A First Course in Loop Quantum Gravity - Rodolfo (university Of The Republic Of Uruguay) Gambini - Bog - Oxford University Press - Plusbog.dk

A First Course in Loop Quantum Gravity - Rodolfo (university Of The Republic Of Uruguay) Gambini - Bog - Oxford University Press - Plusbog.dk

This book provides an accessible introduction to loop quantum gravity and some of its applications, at a level suitable for undergraduate students and others with only a minimal knowledge of college level physics. In particular it is not assumed that the reader is familiar with general relativity and only minimally familiar with quantum mechanics and Hamiltonian mechanics. Most chapters end with problems that elaborate on the text, and aid learning. Applications such as loop quantum cosmology, black hole entropy and spin foams are briefly covered. The text is ideally suited for an undergraduate course in the senior year of a physics major. It can also be used to introduce undergraduates to general relativity and quantum field theory as part of a ''special topics'' type of course.

DKK 491.00
1

Life after Gravity - Patricia (fellow Of Clare College Fara - Bog - Oxford University Press - Plusbog.dk

Life after Gravity - Patricia (fellow Of Clare College Fara - Bog - Oxford University Press - Plusbog.dk

The story of Isaac Newton''s decades in London - as ambitious cosmopolitan gentleman, President of London''s Royal Society, Master of the Mint, and investor in the slave trade.Isaac Newton is celebrated throughout the world as a great scientific genius who conceived the theory of gravity. But in his early fifties, he abandoned his life as a reclusive university scholar to spend three decades in London, a long period of metropolitan activity that is often overlooked. Enmeshed in Enlightenment politics and social affairs, Newton participated in the linked spheres of early science and imperialist capitalism. Instead of the quiet cloisters and dark libraries of Cambridge''s all-male world, he now moved in fashionable London society, which was characterized by patronage relationships, sexual intrigues and ruthless ambition. Knighted by Queen Anne, and a close ally of influential Whig politicians, Newton occupied a powerful position as President of London''s Royal Society. He also became Master of the Mint, responsible for the nation''s money at a time of financial crisis, and himself making and losing small fortunes on the stock market. A major investor in the East India Company, Newton benefited from the global trading networks that relied on selling African captives to wealthy plantation owners in the Americas, and was responsible for monitoring the import of African gold to be melted down for English guineas. Patricia Fara reveals Newton''s life as a cosmopolitan gentleman by focussing on a Hogarth painting of an elite Hanoverian drawing room. Gazing down from the mantelpiece, a bust of Newton looms over an aristocratic audience watching their children perform a play about European colonialism and the search for gold. Packed with Newtonian imagery, this conversation piece depicts the privileged, exploitative life in which this eminent Enlightenment figure engaged, an uncomfortable side of Newton''s life with which we are much less familiar.

DKK 267.00
1

The Universal Force - Louis Girifalco - Bog - Oxford University Press - Plusbog.dk

The Universal Force - Louis Girifalco - Bog - Oxford University Press - Plusbog.dk

"The Universal Force" conveys the excitement of science and nature''s mysteries. It describes gravitation as seen by examining the achievements of those great scientists who have struggled with the seemingly simple facts and managed to extract some truth about the nature of gravity, its origins, and its effects. Gravity is intimately tied up with motion, and therefore with time and space, and is responsible for planetary systems, the evolution of stars and the existence of black holes and the very beginning of the Universe. It is the universal force, and to look at gravity is to look at the deepest aspects of nature. The historical context from Aristotle''s teleology through Galileo''s conflict with the Church, to Newton''s law, and Einstein''s curved space time, displays the evolution of the science of gravity as one of the greatest and most fascinating human achievements. Contrary to popular opinion, all important science can be understood by anyone, with or without a scientific background. This book shows that the beauty and mysteries of science can be shared with everyone.

DKK 455.00
1

The Universal Force - Louis (professor Of Materials Science Girifalco - Bog - Oxford University Press - Plusbog.dk

The Universal Force - Louis (professor Of Materials Science Girifalco - Bog - Oxford University Press - Plusbog.dk

"The Universal Force" conveys the excitement of science and nature''s mysteries. It describes gravitation as seen by examining the achievements of those great scientists who have struggled with the seemingly simple facts and managed to extract some truth about the nature of gravity, its origins, and its effects. Gravity is intimately tied up with motion, and therefore with time and space, and is responsible for planetary systems, the evolution of stars and the existence of black holes and the very beginning of the Universe. It is the universal force, and to look at gravity is to look at the deepest aspects of nature. The historical context from Aristotle''s teleology through Galileo''s conflict with the Church, to Newton''s law, and Einstein''s curved space time, displays the evolution of the science of gravity as one of the greatest and most fascinating human achievements. Contrary to popular opinion, all important science can be understood by anyone, with or without a scientific background. This book shows that the beauty and mysteries of science can be shared with everyone.

DKK 280.00
1

Introduction to Quantum Field Theory with Applications to Quantum Gravity - Joseph (department Of Theoretical Physics Buchbinder - Bog - Oxford

Introduction to Quantum Field Theory with Applications to Quantum Gravity - Joseph (department Of Theoretical Physics Buchbinder - Bog - Oxford

Applications of quantum field theoretical methods to gravitational physics, both in the semiclassical and the full quantum frameworks, require a careful formulation of the fundamental basis of quantum theory, with special attention to such important issues as renormalization, quantum theory of gauge theories, and especially effective action formalism. The first part of this graduate textbook provides both a conceptual and technical introduction to the theory of quantum fields. The presentation is consistent, starting from elements of group theory, classical fields, and moving on to the effective action formalism in general gauge theories. Compared to other existing books, the general formalism of renormalization in described in more detail, and special attention paid to gauge theories. This part can serve as a textbook for a one-semester introductory course in quantum field theory. In the second part, we discuss basic aspects of quantum field theory in curved space, and perturbative quantum gravity. More than half of Part II is written with a full exposition of details, and includes elaborated examples of simplest calculations. All chapters include exercises ranging from very simple ones to those requiring small original investigations. The selection of material of the second part is done using the “must-know” principle. This means we included detailed expositions of relatively simple techniques and calculations, expecting that the interested reader will be able to learn more advanced issues independently after working through the basic material, and completing the exercises.

DKK 375.00
1

Global Aspects in Gravitation and Cosmology - Pankaj S. Joshi - Bog - Oxford University Press - Plusbog.dk

Global Aspects in Gravitation and Cosmology - Pankaj S. Joshi - Bog - Oxford University Press - Plusbog.dk

Basic to the entire theory and applications of black hole physics Global Aspects in Gravitation and Cosmology covers the topics needed to understand the current key issues in gravitation theory: cosmology and black holes. Emphasized is the basic theme that the very nature of the gravitational field is such that global features of space-time inevitably come into play whenever we try to understand and interpret this force in detail. After discussing the fundamental role played by global considerations in gravity and general relativity, Joshi points out the significant problems that remain. The key problem of which been the issue of quantum effects in strong gravity fields, an understanding of which is essential to formulate any quantum theory of gravity. This book will be beneficial to mathematicians and physicists.

DKK 576.00
1

Introduction to Quantum Field Theory with Applications to Quantum Gravity - Iosif L. (department Of Theoretical Physics Buchbinder - Bog - Oxford

Introduction to Quantum Field Theory with Applications to Quantum Gravity - Iosif L. (department Of Theoretical Physics Buchbinder - Bog - Oxford

Applications of quantum field theoretical methods to gravitational physics, both in the semiclassical and the full quantum frameworks, require a careful formulation of the fundamental basis of quantum theory, with special attention to such important issues as renormalization, quantum theory of gauge theories, and especially effective action formalism. The first part of this graduate textbook provides both a conceptual and technical introduction to the theory of quantum fields. The presentation is consistent, starting from elements of group theory, classical fields, and moving on to the effective action formalism in general gauge theories. Compared to other existing books, the general formalism of renormalization in described in more detail, and special attention paid to gauge theories. This part can serve as a textbook for a one-semester introductory course in quantum field theory. In the second part, we discuss basic aspects of quantum field theory in curved space, and perturbative quantum gravity. More than half of Part II is written with a full exposition of details, and includes elaborated examples of simplest calculations. All chapters include exercises ranging from very simple ones to those requiring small original investigations. The selection of material of the second part is done using the “must-know” principle. This means we included detailed expositions of relatively simple techniques and calculations, expecting that the interested reader will be able to learn more advanced issues independently after working through the basic material, and completing the exercises.

DKK 727.00
1

Covered with Deep Mist - Dean (professor Of History And Philosophy Of Modern Physics Rickles - Bog - Oxford University Press - Plusbog.dk

Covered with Deep Mist - Dean (professor Of History And Philosophy Of Modern Physics Rickles - Bog - Oxford University Press - Plusbog.dk

The problem of quantum gravity is often viewed as the most pressing unresolved problem of modern physics: our theories of spacetime and matter, described respectively by general relativity (Einstein''s theory of gravitation and spacetime) and quantum mechanics (our best theory of matter and the other forces of nature) resist unification. Covered with Deep Mist provides the first book-length treatment of the history of quantum gravity, focusing on its origins and earliest stages of development until the mid-1950s. Readers will be guided through the impacts on the problem of quantum gravity resulting from changes in the two ingredient theories, quantum theory and general relativity, which were themselves still under construction in the years studied. We examine how several of the core approaches of today were formed in an era when the field was highly unfashionable. The book aims to be accessible to a broad range of readers and goes beyond a merely technical examination to include social and cultural factors involved in the changing fortunes of the field. Suitable for both newcomers and seasoned quantum gravity professionals, the book will shine new light on this century-old, unresolved problem.

DKK 946.00
1

Out of Nowhere - Christian Wuethrich - Bog - Oxford University Press - Plusbog.dk

Out of Nowhere - Christian Wuethrich - Bog - Oxford University Press - Plusbog.dk

The two fundamental pillars of physics for over 100 years have been quantum theory and general relativity, but their unification at short distances remains elusive, both technically and conceptually. This work is a philosophical investigation of the second kind of problem, and in particular of the striking fact that in many approaches to ''quantum gravity'' classical spacetime structures are not merely quantized, but arguably absent&#8212so that spacetime is not merely a classical limit, but ''emergent''. This issue is not only central to the problem of quantum gravity, but of deep significance for our philosophical understanding of physical reality, promising a conceptual revolution at least as profound as Einstein''s.Nick Huggett and Christian Wüthrich explore the question of spacetime emergence, for philosophers of metaphysics and science, and argue for spacetime functionalism as the answer to seeing how something non-spatiotemporal could ever appear as space and time. More technical chapters investigate the issue in detail for causal set theory, loop quantum gravity, and string theory, and the book also serves as a philosophical introduction to those theories for philosophers of physics. Out of Nowhere helps physicists clarify what new conceptual framework&#8212not resting on space and time&#8212may be necessary to achieve a theory of quantum gravity. This book also shows philosophers how the world may not be spatiotemporal at root, and what kind of a world we might then live in.

DKK 986.00
1

Oxford Reading Tree TreeTops Reflect: Oxford Level 18: Hand and Foot - Sally Prue - Bog - Oxford University Press - Plusbog.dk

Oxford Reading Tree TreeTops Reflect: Oxford Level 18: Hand and Foot - Sally Prue - Bog - Oxford University Press - Plusbog.dk

An historical story about keeping quiet and telling the truth, and what it really means to be a good person. In Georgian England, in a very fine house, live two quite different girls. Marianne is always careful and quiet, whereas Gravity the chambermaid is clumsy and cheerful. But Gravity is suddenly sent away, and being cheerful is a lot trickier when you have to sleep in a cowshed or sing for your supper. Will Gravity ever find a proper home again?Reflect is a series of emotionally powerful books with realistic settings, carefully crafted to promote thoughtful discussions and develop higher-level reading comprehension. Written by top childrens authors and developed with Literacy expert and Series Editor Nikki Gamble, these are books you can trust to engage, entertain and support childrens personal development. The books are finely levelled, making it easy to match every child to stories with the right depth and complexity for them, and helping them to progress. Each book contains inside cover notes to help children deepen their understanding and support their reading comprehension. Teaching notes on Oxford Owl offer cross-curricular links to relationships education and support literacy skills.

DKK 124.00
1

Random Tensors - Razvan Gheorghe Gurau - Bog - Oxford University Press - Plusbog.dk

Random Tensors - Razvan Gheorghe Gurau - Bog - Oxford University Press - Plusbog.dk

Written by the creator of the modern theory of random tensors, this book is the first self-contained introductory text to this rapidly developing theory. Starting from notions familiar to the average researcher or PhD student in mathematical or theoretical physics, the book presents in detail the theory and its applications to physics. The recent detections of the Higgs boson at the LHC and gravitational waves at LIGO mark new milestones in Physics confirming long standing predictions of Quantum Field Theory and General Relativity. These two experimental results only reinforce today the need to find an underlying common framework of the two: the elusive theory of Quantum Gravity. Over the past thirty years, several alternatives have been proposed as theories of Quantum Gravity, chief among them String Theory. While these theories are yet to be tested experimentally, key lessons have already been learned. Whatever the theory of Quantum Gravity may be, it must incorporate random geometry in one form or another. This book introduces a framework for studying random geometries in any dimensions. Building on the resounding success of random matrices as theories of random two dimensional surfaces, random tensors are their natural generalization to theories of random geometry in arbitrary dimension. This book shows that many of the celebrated results in random matrices, most notably ''t Hooft''s 1/N expansion, can be generalized to higher dimensions. It provides a complete and self-contained derivation of the key results on random tensors.

DKK 1039.00
1

The Foundation of Reality - - Bog - Oxford University Press - Plusbog.dk

The Foundation of Reality - - Bog - Oxford University Press - Plusbog.dk

Are space and time fundamental features of our world or might they emerge from something else? The Foundation of Reality brings together metaphysicians and philosophers of physics working on space, time, and fundamentality to address this timely question. Recent developments in the interpretation of quantum mechanics and the understanding of certain approaches to quantum gravity have led philosophers of physics to propose that space and time might be emergent rather than fundamental. But such discussions are often conducted without engagement with those working on fundamentality and related issues in contemporary metaphysics. This book aims to correct this oversight. The diverse contributions to this volume address topics including the nature of fundamentality, the relation of space and time to quantum entanglement, and space and time in theories of quantum gravity. Only through consideration of a range of different approaches to the topic can we hope to get clear on the status of space and time in our contemporary understanding of physical reality.

DKK 912.00
1

On Time - Prof Jan Zaanen - Bog - Oxford University Press - Plusbog.dk

On Time - Prof Jan Zaanen - Bog - Oxford University Press - Plusbog.dk

This text revolves around a new and unusual view on the most fundamental puzzle of physics. It focusses on the key aspect that makes the role of the time dimension fundamentally different: causality. It deals on the one hand with general relativity, and on the other hand with quantum theory. The implicit and intuitive way by which causality is usually taken for granted is just made explicit and less self-evident, shedding a new light on the gravity-quantum conflict. The case is made that gravity is a necessary condition for a causal universe. But upon turning to the "pure" unitary quantum physics explaining the nature of matter one is dealing with the strictly a-causal time expressed through the thermal quantum field theory machinery. When this a-causal microscopic and causal macroscopic world meet, one encounters the wavefunction collapse, that itself may be rooted in the quantum-gravity conflict. Modern ideas are discussed resting on eigenstate thermalization showing how this may lie eventually at the origin of irreversible thermodynamics, with its famous second law setting also a direction of time. The case is anchored in the sophisticated modern mathematical machinery of both general relativity and quantum physics which is normally barely disseminated beyond the theoretical physics floors. The book is unique in the regard that the consequences of this machinery - Riemannian geometry and Penrose diagrams, thermal quantum fields, quantum non-equilibrium and so forth -- are explained in an original, descriptive language conveying the conceptual consequences while avoiding mathematical technicalities.

DKK 241.00
1

General Relativity - Steven Carlip - Bog - Oxford University Press - Plusbog.dk

General Relativity - Steven Carlip - Bog - Oxford University Press - Plusbog.dk

Einstein''s general theory of relativity -- currently our best theory of gravity -- is important not only to specialists, but to a much wider group of physicists. This short textbook on general relativity and gravitation offers students glimpses of the vast landscape of science connected to general relativity. It incorporates some of the latest research in the field. The book is aimed at readers with a broad range of interests in physics, from cosmology, to gravitational radiation, to high energy physics, to condensed matter theory. The pedagogical approach is "physics first": readers move very quickly to the calculation of observational predictions, and only return to the mathematical foundations after the physics is established. In addition to the "standard" topics covered by most introductory textbooks, it contains short introductions to more advanced topics: for instance, why field equations are second order, how to treat gravitational energy, and what is required for a Hamiltonian formulation of general relativity. A concluding chapter discusses directions for further study, from mathematical relativity, to experimental tests, to quantum gravity. This is an introductory text, but it has also been written as a jumping-off point for readers who plan to study more specialized topics.

DKK 605.00
1

General Relativity - Steven (department Of Physics Carlip - Bog - Oxford University Press - Plusbog.dk

General Relativity - Steven (department Of Physics Carlip - Bog - Oxford University Press - Plusbog.dk

Einstein''s general theory of relativity -- currently our best theory of gravity -- is important not only to specialists, but to a much wider group of physicists. This short textbook on general relativity and gravitation offers students glimpses of the vast landscape of science connected to general relativity. It incorporates some of the latest research in the field. The book is aimed at readers with a broad range of interests in physics, from cosmology, to gravitational radiation, to high energy physics, to condensed matter theory. The pedagogical approach is "physics first": readers move very quickly to the calculation of observational predictions, and only return to the mathematical foundations after the physics is established. In addition to the "standard" topics covered by most introductory textbooks, it contains short introductions to more advanced topics: for instance, why field equations are second order, how to treat gravitational energy, and what is required for a Hamiltonian formulation of general relativity. A concluding chapter discusses directions for further study, from mathematical relativity, to experimental tests, to quantum gravity. This is an introductory text, but it has also been written as a jumping-off point for readers who plan to study more specialized topics.

DKK 297.00
1

The Arguments of Time - - Bog - Oxford University Press - Plusbog.dk

The Arguments of Time - - Bog - Oxford University Press - Plusbog.dk

These nine essays, commissioned on the initiative of the Philosophy section of the British Academy, address fundamental questions about time in philosophy, physics, linguistics, and psychology. Are there facts about the future? Could we affect the past? In physics, general relativity and quantum theory give contradictory treatments of time. So in the current search for a theory of quantum gravity, which should give way: general relativity or quantum theory? In linguistics and psychology, how does our language represent time, and how do our minds keep track of it?

DKK 382.00
1