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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


The Problem of Time In Quantum Geometrodynamics

Karel Kuchař

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/9780197263464.003.0007
Subject:
Philosophy, General

This chapter describes the problem of time in quantum geometrodynamics in more detail. It first describes how the fundamental equation of general relativity can be written as an instantaneous law, ... 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


Geon Wheeler

Dean Rickles

in Covered with Deep Mist: The Development of Quantum Gravity (1916-1956)

Published in print:
2020
Published Online:
April 2020
ISBN:
9780199602957
eISBN:
9780191844393
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199602957.003.0008
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter focuses on John Wheeler’s work on geons and geometrodynamics which would lead to many concepts and results that would be of importance to quantum gravity research - these projects, ... More


Formation of visual science cultures

Hentschel Klaus

in Visual Cultures in Science and Technology: A Comparative History

Published in print:
2014
Published Online:
March 2015
ISBN:
9780198717874
eISBN:
9780191787546
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198717874.003.0004
Subject:
Physics, History of Physics

This chapter starts with a discussion of the canonical study on the formation of a visual culture in science: Martin Rudwick's pioneering paper of 1976 on “The Emergence of a Visual Language for ... 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


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