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How unimodular gravity theories differ from general relativity at quantum level [PDF]
, 2015 We investigate path integral quantization of two versions of unimodular gravity. First a fully diffeomorphism-invariant theory is analyzed, which does not include a unimodular condition on the metric, while still being equivalent to other unimodular ...
R. Bufalo +3 more
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A general theory of quantum relativity
Physics Letters B, 2004 13 pages, LaTex; An expanded version, including many clarifications, a new title and abstract as well as new references, to appear in Physics Letters ...
Minic, Djordje, Tze, Chia-Hsiung
openaire +3 more sources
General Relativity, Torsion and Quantum Theory [PDF]
Current Science, 2015 14 pages; published in Current Science [Special Section: 100 Years of General Relativity]
openaire +2 more sources
Simple model for quantum general relativity from loop quantum gravity [PDF]
, 2010 New progress in loop gravity has lead to a simple model of a 'general-covariant quantum field theory'. I sum up the definition of the model in self-contained form, in terms accessible to those outside the subfield.
C. Rovelli
semanticscholar +1 more source
A Lorentzian signature model for quantum general relativity [PDF]
, 1999 We give a relativistic spin network model for quantum gravity based on the Lorentz group and its q-deformation, the Quantum Lorentz Algebra. We propose a combinatorial model for the path integral given by an integral over suitable representations of ...
J. Barrett, L. Crane
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Deformed symmetries from quantum relational observables [PDF]
, 2007 Deformed Special Relativity (DSR) is a candidate phenomenological theory to describe the Quantum Gravitational (QG) semi-classical regime. A possible interpretation of DSR can be derived from the notion of deformed reference frame.
Girelli, Florian, Poulin, David
core +1 more source
Finiteness of a spinfoam model for Euclidean quantum general relativity [PDF]
, 2000 We prove that a certain spinfoam model for Euclidean quantum general relativity, recently defined, is finite: all its all Feynman diagrams converge. The model is a variant of the Barrett–Crane model, and is defined in terms of a field theory over SO(4 ...
Alejandro Perez
semanticscholar +1 more source
Lectures on faster-than-light travel and time travel
SciPost Physics Lecture Notes, 2019 These lecture notes were prepared for a 25-hour course for advanced undergraduate students participating in Perimeter Institute's Undergraduate Summer Program.
Barak Shoshany
doaj +1 more source
Clocks without “Time” in Entangled-State Experiments
Entropy, 2020 Entangled states of light exhibit measurable correlations between light detections at separated locations. These correlations are exploited in entangled-state quantum key distribution.
F. Hadi Madjid, John M. Myers
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Unconventional reconciliation path for quantum mechanics and general relativity
IET Quantum Communication, 2022 Physics in general is successfully governed by quantum mechanics at the microscale and principles of relativity at the macroscale. Any attempts to unify them using conventional methods have somewhat remained elusive for nearly a century up to the present
Samuel Polopa Yuguru
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