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The Arguments of Time

Jeremy Butterfield (ed.)

Published in print:
2006
Published Online:
January 2012
ISBN:
9780197263464
eISBN:
9780191734748
Item type:
book
Publisher:
British Academy
DOI:
10.5871/bacad/9780197263464.001.0001
Subject:
Philosophy, General

These nine chapters, commissioned on the initiative of the Philosophy section of the British Academy, address fundamental questions about time in philosophy, physics, linguistics, and psychology. Are ... More


On the Emergence of Time in Quantum Gravity

Jeremy Butterfield and Chris Isham

in The Arguments of Time

Published in print:
2006
Published Online:
January 2012
ISBN:
9780197263464
eISBN:
9780191734748
Item type:
chapter
Publisher:
British Academy
DOI:
10.5871/bacad/9780197263464.003.0006
Subject:
Philosophy, General

This chapter discusses the idea that the treatment of time in present-day physical theories, general relativity and quantum theory, might be an approximation to a very different treatment in the as ... More


Quantum Gravity: Third Edition

Claus Kiefer

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199585205
eISBN:
9780191739378
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199585205.001.0001
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This book is concerned with the attempts to unify Einstein's theory of general relativity and quantum theory into a theory of quantum gravity. It presents, for the first time, most of the approaches ... More


Quantum Gravity Meets Structuralism: Interweaving Relations in the Foundations of Physics

Dean Rickles and Steven French

in The Structural Foundations of Quantum Gravity

Published in print:
2006
Published Online:
October 2011
ISBN:
9780199269693
eISBN:
9780191699436
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199269693.003.0001
Subject:
Philosophy, Philosophy of Science

This introductory chapter provides some of the technical and philosophical background to the issues discussed in this volume. Topics covered include the background, concepts and methods of quantum ... More


The Structural Foundations of Quantum Gravity

Dean Rickles, Steven French, and Juha T. Saatsi (eds)

Published in print:
2006
Published Online:
October 2011
ISBN:
9780199269693
eISBN:
9780191699436
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199269693.001.0001
Subject:
Philosophy, Philosophy of Science

Quantum gravity is the name given to a theory that unites general relativity — Einstein's theory of gravitation and spacetime — with quantum field theory, our framework for describing ... More


Structural Realism and Quantum Gravity

Tian Yu Cao

in The Structural Foundations of Quantum Gravity

Published in print:
2006
Published Online:
October 2011
ISBN:
9780199269693
eISBN:
9780191699436
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199269693.003.0002
Subject:
Philosophy, Philosophy of Science

Technically, it is very difficult to construct a tenable quantum theory of gravity. The major concern of a philosopher, however, is with having a consistent strategy to guide technical moves. If we ... More


Quantum Gravity

Claus Kiefer

Published in print:
2007
Published Online:
January 2010
ISBN:
9780199212521
eISBN:
9780191707377
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199212521.001.0001
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This book is concerned with the attempts to unify Einstein's theory of general relativity and quantum theory into a theory of quantum gravity. Among the approaches include canonical quantum gravity ... More


Covariant approaches to quantum gravity

Claus Kiefer

in Quantum Gravity: Third Edition

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199585205
eISBN:
9780191739378
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199585205.003.0002
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter introduces the important concept of the graviton. It discusses at some length linearized quantum gravity and its implications. A central role is played by path-integral quantization from ... More


Phenomenology, decoherence, and the arrow of time

Claus Kiefer

in Quantum Gravity: Third Edition

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199585205
eISBN:
9780191739378
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199585205.003.0010
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This final chapter starts with a brief review of quantum-gravity phenomenology. It then focuses on an important conceptual issue – the relevance of quantum gravity for the general interpretation of ... More


Why Quantum Gravity?

Claus Kiefer

in Quantum Gravity

Published in print:
2007
Published Online:
January 2010
ISBN:
9780199212521
eISBN:
9780191707377
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199212521.003.01
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This introductory chapter presents the general motivation for constructing a quantum theory of gravity. The main motivation is the conceptual incompleteness of present theoretical physics. It ... More


Points, Particles, and Structural Realism

Oliver Pooley

in The Structural Foundations of Quantum Gravity

Published in print:
2006
Published Online:
October 2011
ISBN:
9780199269693
eISBN:
9780191699436
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199269693.003.0004
Subject:
Philosophy, Philosophy of Science

This chapter argues that, whatever the interpretative difficulties of generally covariant spacetime physics are, they do not support or suggest structural realism. In particular, it shows that there ... More


Covariant Approaches to Quantum Gravity

Claus Kiefer

in Quantum Gravity

Published in print:
2007
Published Online:
January 2010
ISBN:
9780199212521
eISBN:
9780191707377
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199212521.003.02
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter introduces the important concept of a graviton. It discusses at some length linearized quantum gravity and its implications. A central role is played by path-integral quantization from ... More


A Lab for Quantum Gravity

Pankaj S. Joshi

in The Story of Collapsing Stars: Black Holes, Naked Singularities, and the Cosmic Play of Quantum Gravity

Published in print:
2015
Published Online:
January 2015
ISBN:
9780199686766
eISBN:
9780191766817
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199686766.003.0009
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter discusses here the various approaches available today to construct a quantum theory of gravity for the universe. These include the string theories and loop quantum gravity ... More


Quantum gravity with connections and loops

Claus Kiefer

in Quantum Gravity: Third Edition

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199585205
eISBN:
9780191739378
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199585205.003.0006
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter does for the connection and loop variables what is done for the metric variables in Chapter 5. Loop quantum gravity is discussed in detail. Its canonical variables are holonomies and ... More


Custodian of quantum field theory

JAGDISH MEHRA and KIMBALL A. MILTON

in Climbing the Mountain: The Scientific Biography of Julian Schwinger

Published in print:
2003
Published Online:
February 2010
ISBN:
9780198527459
eISBN:
9780191709593
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198527459.003.0011
Subject:
Physics, History of Physics

Julian Schwinger had now scaled the peak of quantum electrodynamics (QED), not once, but three times, the last time by inventing a new approach to any quantum-mechanical system, the quantum dynamical ... More


Relational Blockworld Approach to Unification and Quantum Gravity

Michael Silberstein, W.M. Stuckey, and Timothy McDevitt

in Beyond the Dynamical Universe: Unifying Block Universe Physics and Time as Experienced

Published in print:
2018
Published Online:
March 2018
ISBN:
9780198807087
eISBN:
9780191844850
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198807087.003.0007
Subject:
Physics, Theoretical, Computational, and Statistical Physics, History of Physics

The main thread of chapter 6 prompts the need for quantum gravity (QG) and introduces the RBW approach to QG, unification in particle physics, dark matter, and dark energy. The details of RBW’s ... More


Advantages and Drawbacks Of Effective Theory

VOLOVIK GRIGORY E.

in The Universe in a Helium Droplet

Published in print:
2009
Published Online:
January 2010
ISBN:
9780199564842
eISBN:
9780191709906
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199564842.003.0006
Subject:
Physics, Condensed Matter Physics / Materials, Particle Physics / Astrophysics / Cosmology

The energy momentum tensor for the vacuum field which represents gravity is non-covariant, since the effective gravitational field obeys hydrodynamic equations rather than Einstein equations. ... More


The Development of Machian Themes in the Twentieth Century

Julian Barbour

in The Arguments of Time

Published in print:
2006
Published Online:
January 2012
ISBN:
9780197263464
eISBN:
9780191734748
Item type:
chapter
Publisher:
British Academy
DOI:
10.5871/bacad/9780197263464.003.0005
Subject:
Philosophy, General

This chapter charts the complicated legacy of Mach's critique of absolute space and time. In 1902, Poincaré achieved a clear formulation of what a truly Machian mechanics should accomplish: it should ... More


Why quantize gravity?

Rodolfo Gambini and Jorge Pullin

in A First Course in Loop Quantum Gravity

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199590759
eISBN:
9780191774980
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199590759.003.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter asks why we need to apply the rules of quantum mechanics to the gravitational field. It provides a bit of history and context, and outlines the types of technical problems one ... More


A First Course in Loop Quantum Gravity

Rodolfo Gambini and Jorge Pullin

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199590759
eISBN:
9780191774980
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199590759.001.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This book introduces 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 ... More


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