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Canonical quantum gravity and the problem of time [PDF]
, 1992 The aim of this paper is to provide a general introduction to the problem of time in quantum gravity. This problem originates in the fundamental conflict between the way the concept of ‘time’ is used in quantum theory, and the role it plays in a ...
C. Isham
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Black hole entropy in canonical quantum gravity and superstring theory. [PDF]
Physical Review D, Particles and fields, 1994 In this paper the entropy of an eternal Schwarzschild black hole is studied in the limit of an infinite black hole mass. The problem is addressed from the point of view of both canonical quantum gravity and superstring theory.
L. Susskind, J. Uglum
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Space–Time Physics in Background-Independent Theories of Quantum Gravity
Universe, 2021 Background independence is often emphasized as an important property of a quantum theory of gravity that takes seriously the geometrical nature of general relativity.
Martin Bojowald
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Discreteness corrections and higher spatial derivatives in effective canonical quantum gravity [PDF]
, 2014 Canonical quantum theories with discrete space may imply interesting effects. This article presents a general effective description, paying due attention to the role of higher spatial derivatives in a local expansion and differences to higher time ...
M. Bojowald, George M. Paily, J. Reyes
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Clocks and Trajectories in Quantum Cosmology
Universe, 2022 We consider a simple cosmological model consisting of an empty Bianchi I Universe, whose Hamiltonian we deparametrise to provide a natural clock variable. The model thus effectively describes an isotropic universe with an induced clock given by the shear.
Przemysław Małkiewicz +2 more
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LORENTZ VIOLATIONS IN CANONICAL QUANTUM GRAVITY [PDF]
CPT and Lorentz Symmetry, 2002 4 pages, Revtex. Talk given at CP01.
Gambini, Rodolfo, Pullin, Jorge
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PARAMETRIZING FLUIDS IN CANONICAL QUANTUM GRAVITY [PDF]
International Journal of Modern Physics A, 2008 The problem of time is an unsolved issue of canonical General Relativity. A possible solution is the Brown-Kuchař mechanism which couples matter to the gravitational field and recovers a physical, i.e. non vanishing, observable Hamiltonian functional by manipulating the set of constraints. Two cases are analyzed.
Zonetti, Simone, Montani, Giovanni
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Potential tests of the generalized uncertainty principle in the advanced LIGO experiment
Physics Letters B, 2018 The generalized uncertainty principle and a minimum measurable length arise in various theories of gravity and predict Planck-scale modifications of the canonical position-momentum commutation relation.
Pasquale Bosso +2 more
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Fundamental length scale and the bending of light in a gravitational field
European Physical Journal C: Particles and Fields, 2022 The canonical approach to quantizing quantum gravity is understood to suffer from pathological non-renomalizability. Nevertheless in the context of effective field theory, a viable perturbative approach to calculating elementary processes is possible ...
Philip Tee, Nosratollah Jafari
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Hamiltonian Renormalization V: Free Vector Bosons
Frontiers in Astronomy and Space Sciences, 2021 In a recent proposal we applied methods from constructive QFT to derive a Hamiltonian Renormalization Group in order to employ it ultimately for canonical quantum gravity.
K. Liegener, T. Thiemann
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