Results 111 to 120 of about 2,110,870 (239)
International Journal of Modern Physics D, 2003 A sketch of the affine quantum gravity program illustrates a different perspective on several difficult issues of principle: metric positivity; quantum anomalies; and nonrenormalizability.
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The information metric on the moduli space of instantons with global symmetries
Physics Letters B, 2016 In this note we revisit Hitchin's prescription [1] of the Fisher metric as a natural measure on the moduli space of instantons that encodes the space–time symmetries of a classical field theory. Motivated by the idea of the moduli space of supersymmetric
Emanuel Malek +2 more
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Quantum aether and an invariant Planck scale
, 2011 We argue that a quantum aether is consistent with the principle of relativity and can provide an economical way of having an invariant quantum gravity or Planck scale.
Das, Saurya, Vagenas, Elias C.
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International Journal of Modern Physics D, 2001 The Wheeler–DeWitt equation in quantum gravity is timeless in character. In order to discuss quantum to classical transition of the universe, one uses a time prescription in quantum gravity to obtain a time contained description starting from Wheeler–DeWitt equation and WKB ansatz for the WD wavefunction. The approach has some drawbacks. In this work,
Biswas, S., Shaw, A., Modak, B.
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Weak-Light Phase-Locking Time Delay Interferometry with Optical Frequency Combs
Sensors, 2022 In the future space-borne gravitational wave (GW) detector, the optical transponder scheme, i.e., the phase-locking scheme, will be utilized so as to maintain the signal-to-noise ratio (SNR).
Mingyang Xu +6 more
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Validity of semiclassical gravity in the stochastic gravity approach
, 2005 In semiclassical gravity the back-reaction of the classical gravitational field interacting with quantum matter fields is described by the semiclassical Einstein equations.
Verdaguer, E.
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Gravitationally Induced Entanglement between Two Massive Particles is Sufficient Evidence of Quantum Effects in Gravity. [PDF]
Physical Review Letters, 2017 All existing quantum-gravity proposals are extremely hard to test in practice. Quantum effects in the gravitational field are exceptionally small, unlike those in the electromagnetic field.
C. Marletto, V. Vedral
semanticscholar +1 more source
Perturbative QUANTUM GRAVITY [PDF]
From Quarks and Gluons to Quantum Gravity, 2003 A good understanding of Perturbative Quantum Gravity is essential for anyone who wishes to proceed towards any kind of non-perturbative approach. This lecture is a brief resumme of the main features of the perturbative regime.
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An Asymptotically Safe Guide to Quantum Gravity and Matter [PDF]
Frontiers in Astronomy and Space Sciences, 2018 Asymptotic safety generalizes asymptotic freedom and could contribute to understanding physics beyond the Standard Model. It is a candidate scenario to provide an ultraviolet extension for the effective quantum field theory of gravity through an ...
A. Eichhorn
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International Journal of Modern Physics D, 2014 This paper presents an "in-a-nutshell" yet self-contained introductory review on loop quantum gravity (LQG) — a background-independent, nonperturbative approach to a consistent quantum theory of gravity. Instead of rigorous and systematic derivations, it aims to provide a general picture of LQG, placing emphasis on the fundamental ideas and their ...
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