Results 101 to 110 of about 1,342,913 (205)
A First Class Constraint Generates Not a Gauge Transformation, But a Bad Physical Change: The Case of Electromagnetism [PDF]
, 2013 In Dirac-Bergmann constrained dynamics, a first-class constraint typically does not _alone_ generate a gauge transformation. By direct calculation it is found that each first-class constraint in Maxwell's theory generates a change in the electric field ...
Pitts, J. Brian, J. Brian Pitts
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In search of lost spacetime: philosophical issues arising in quantum gravity [PDF]
, 2011 This paper issues a call to arms and seeks to entice the reader with some of the most captivating philosophical puzzles arising in quantum gravity. The analysis will be prefaced, in Section 1, by general considerations concerning the need for finding a ...
Wuthrich, Christian
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On Time in Quantum Physics [PDF]
, 2012 First, I briefly review the different conceptions of time held by three rival interpretations of quantum theory: the collapse of the wave-packet, the pilot-wave interpretation, and the Everett interpretation (Section 2).
Butterfield, Jeremy, Jeremy Butterfield
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Spin Foams and Canonical Quantization
Symmetry, Integrability and Geometry: Methods and Applications, 2012 This review is devoted to the analysis of the mutual consistency of the spin foam and canonical loop quantizations in three and four spacetime dimensions.
Sergei Alexandrov +2 more
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Uplifting AdS3/CFT2 to flat space holography
Journal of High Energy Physics, 2019 Four-dimensional (4D) flat Minkowski space admits a foliation by hyperbolicslices. Euclidean AdS3 slices fill the past and future lightcones of the origin, while dS3 slices fill the region outside the lightcone.
Adam Ball +4 more
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Covariant Quantum Gravity I: Covariant Hamiltonian Framework
, 2016 The first part of the series formulates the Einstein-Cartan theory in the covariant hamiltonian framework. The first section revises the general multisymplectic approach and introduces the notion of the d-jet bundles. Since the whole Standard Model Lagrangian (including gravity) can be written as the functional of the forms, the structure of the d-jet ...
openaire +2 more sources
Covariant Pauli-Villars regularization of quantum gravity at the one-loop order [PDF]
Physical Review D, 1993 We study a regularization of the Pauli-Villars kind of the one loop gravitational divergences in any dimension. The Pauli-Villars fields are massive particles coupled to gravity in a covariant and nonminimal way, namely one real tensor and one complex vector.
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Generative flow networks in covariant loop quantum gravity
Physical Review DSpin foams arose as the covariant (path integral) formulation of quantum gravity depicting transition amplitudes between different quantum geometry states. As such, they provide a scheme to study the no boundary proposal, specifically the nothing to something transition and compute relevant observables using high performance computing (HPC).
Joseph Bunao +3 more
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Hilbert space structure of covariant loop quantum gravity [PDF]
Physical Review D, 2002 20 pages ...
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Towards a Covariant Loop Quantum Gravity
, 2006 13 pages, review, draft chapter for the book "Approaches to quantum gravity", being prepared by Daniele Oriti for Cambridge University Press, comments ...
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