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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 geometrodynamics

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/9780199585205.003.0005
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter presents the quantization of canonical gravity in the metric formulation. The central equations are the Wheeler-DeWitt equation and the quantum diffeomorphism constraints, whose general ... More


Quantum Geometrodynamics

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/9780199212521.003.05
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter considers in great detail the quantization of canonical gravity in the metric formulation. The central equations are the Wheeler–DeWitt equation and the quantum diffeomorphism ... More


Introduction: Two Minutes to Midnight

Andrew R. Hom

in International Relations and the Problem of Time

Published in print:
2020
Published Online:
July 2020
ISBN:
9780198850014
eISBN:
9780191884474
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198850014.003.0001
Subject:
Political Science, International Relations and Politics

Using the Doomsday Clock as an organizing symbol, the introduction makes the case for time’s relevance to a range of global political phenomena, clears important conceptual ground, and sets the stage ... More


Why Timing Matters

Andrew R. Hom

in International Relations and the Problem of Time

Published in print:
2020
Published Online:
July 2020
ISBN:
9780198850014
eISBN:
9780191884474
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198850014.003.0003
Subject:
Political Science, International Relations and Politics

Chapter two makes the case for timing theory’s value. Timing offers a simple but powerful gestalt shift, from taking “times” as existential givens or temporalities as subjective and subordinate ... More


Conclusion: Re-timing and Reclaiming International Relations

Andrew R. Hom

in International Relations and the Problem of Time

Published in print:
2020
Published Online:
July 2020
ISBN:
9780198850014
eISBN:
9780191884474
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198850014.003.0010
Subject:
Political Science, International Relations and Politics

The book’s conclusion takes stock of insights developed throughout and highlights some of their wider implications. After summarizing narrative timing theory’s contributions to IR and our ... More


The Problem of Time

Craig Callender

in What Makes Time Special?

Published in print:
2017
Published Online:
July 2017
ISBN:
9780198797302
eISBN:
9780191839603
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198797302.003.0001
Subject:
Philosophy, Metaphysics/Epistemology

In early childhood we come to model the world as having a special present that carves the world up into a past, present, and future. We regard the past as fixed and the future open, and we feel that ... More


Further developments

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/9780199590759.003.0010
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter discusses several topics in which loop quantum gravity techniques have been applied. These include black hole entropy in the context of black hole thermodynamics and how loop quantum ... More


Shape Dynamics and the Linking Theory

Flavio Mercati

in Shape Dynamics: Relativity and Relationalism

Published in print:
2018
Published Online:
April 2018
ISBN:
9780198789475
eISBN:
9780191831294
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198789475.003.0012
Subject:
Physics, Theoretical, Computational, and Statistical Physics, Particle Physics / Astrophysics / Cosmology

This chapter explains in detail the current Hamiltonian formulation of SD, and the concept of Linking Theory of which (GR) and SD are two complementary gauge-fixings. The physical degrees of freedom ... More


Illusionary images of time

George Jaroszkiewicz

in Images of Time: Mind, Science, Reality

Published in print:
2016
Published Online:
January 2016
ISBN:
9780198718062
eISBN:
9780191787553
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198718062.003.0008
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

Some models of time do not match the human experience of time ‘flowing’ or passing. This chapter touches upon those models that suggest that this experience is an illusion. The Block Universe model ... More


The reparametrization of time

George Jaroszkiewicz

in Images of Time: Mind, Science, Reality

Published in print:
2016
Published Online:
January 2016
ISBN:
9780198718062
eISBN:
9780191787553
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198718062.003.0015
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter reviews the parametrization of absolute time and develop the concept of temporal reparametrizations, or changes in our clocks. Using the action integral and Dirac’s constraint mechanics, ... More


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