Results 71 to 80 of about 500,703 (203)
Quantum gravity effects on Hořava–Lifshitz black hole
Nuclear Physics B, 2018 In this paper, we would like to obtain quantum gravity effects by using Hořava–Lifshitz black hole. We consider logarithmic corrected thermodynamics quantities and investigate the effects of logarithmic correction term.
B. Pourhassan +3 more
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Holographic relations in loop quantum gravity [PDF]
arXiv, 2016 It is shown that a relation between entropy and minimal area holds in loop quantum gravity, reminiscent of the Ryu-Takayanagi relation.
arxiv
The topological order in loop quantum gravity [PDF]
arXiv, 2023 Topological order (long-range entanglement) is a new type of order that beyond Landau's symmetry breaking theory. This concept plays important roles in modern condensed matter physics. The topological entanglement entropy provides a universal quantum number to characterize the topological order in a system.
arxiv
Introduction to Loop Quantum Gravity and Cosmology [PDF]
, 2013 30 pages, 2 figures.
openaire +4 more sources
Living Reviews in Relativity, 2008 Quantum gravity is expected to be necessary in order to understand situations in which classical general relativity breaks down. In particular in cosmology one has to deal with initial singularities, i.e., the fact that the backward evolution of a ...
Bojowald Martin
doaj
Cosmological Constant from Condensation of Defect Excitations
Universe, 2018 A key challenge for many quantum gravity approaches is to construct states that describe smooth geometries on large scales. Here we define a family of (2+1)-dimensional quantum gravity states which arise from curvature excitations concentrated at point ...
Bianca Dittrich
doaj +1 more source
Piecewise linear loop quantum gravity [PDF]
Classical and Quantum Gravity, 2010 19 ...
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An illustration of 2+1 gravity loop transform troubles [PDF]
arXiv, 1993 A nonperturbative approach to quantum gravity that has generated much discussion is the attempt to construct a ``loop representation." Despite it's success in linear quantum theories and a part of 2+1 quantum gravity, it has recently been noticed that difficulties arise with loop representations in a different ``sector" of 2+1 gravity. The problems are
arxiv
Scalar curvature operator for loop quantum gravity on a cubical graph [PDF]
arXiv, 2023 We introduce a new operator representing the three-dimensional scalar curvature in loop quantum gravity. The operator is constructed by writing the Ricci scalar classically as a function of the Ashtekar variables and regularizing the resulting expression on a cubical spin network graph.
arxiv
Wilson loops in nonperturbative quantum gravity [PDF]
Physical Review D, 2015 By explicit construction, we show that one can in a simple way introduce and measure gravitational holonomies and Wilson loops in lattice formulations of nonperturbative quantum gravity based on (causal) dynamical triangulations. We use this setup to investigate a class of Wilson line observables associated with the world line of a point particle ...
Jerzy Jurkiewicz +4 more
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