Results 121 to 130 of about 1,342,913 (205)

Reeh-Schlieder meets Newton-Wigner [PDF]

, 1998
The Reeh-Schlieder theorem asserts the vacuum and certain other states to be spacelike superentangled relative to local fields. This motivates an inquiry into the physical status of various concepts of localization.
Fleming, Gordon N.
core  

Covariant phase space and the semi-classical Einstein equation

Journal of High Energy Physics
The covariant phase space formalism in general relativity is a covariant method for constructing the symplectic two-form, Hamiltonian and other conserved charges on the phase space of solutions to the Einstein equation with classical matter. In this note,
Abhirup Bhattacharya, Onkar Parrikar
doaj   +1 more source

Intertwiners for D=3 gauge theories

Nuclear Physics B
We apply the intertwiner operator method of arXiv:2411.08865 to topological field theories, including BF theories, Chern-Simons theory, and three-dimensional gravity.
P.A. Grassi, E.M.G. Landò
doaj   +1 more source

Effective Models of Quantum Gravity Induced by Planck Scale Modifications in the Covariant Quantum Algebra

Advances in High Energy Physics, 2017
We introduce modified covariant quantum algebra based on the so-called Quesne-Tkachuk algebra. By means of a deformation procedure we arrive at a class of higher-derivative models of gravity.
G. P. de Brito, P. I. C. Caneda, Y. M. P. Gomes, J. T. Guaitolini Junior, V. Nikoofard   +4 more
doaj   +1 more source

Renormalization group flow of f(R)-gravity [PDF]

, 2008
We use the functional renormalization group equation for quantum gravity to construct a non-perturbative flow equation for modified gravity theories of the form $S = \int d^dx \sqrt{g} f(R)$.
Afd Theoretical Physics (ITF), Saueressig, F., Machado, P.F., Dep Natuurkunde, Quantum Gravity, Strings and Elementary Particles   +4 more
core  

Gravity and Gauge [PDF]

, 2012
Philosophers of physics and physicists have long been intrigued by the analogies and disanalogies between gravitational theories and (Yang-Mills-type) gauge theories.
Teh, Nicholas
core  

Covariant fractional quantum framework for collective spontaneous emission

Nuclear Physics B
We formulate a covariant fractional quantum framework for collective spontaneous emission in many-body atomic systems embedded within curved spacetime, based on the Riemann-Liouville (RL) formalism.
Mourad Benzahi, Allan R.P. Moreira, Abdelmalek Bouzenada   +2 more
doaj   +1 more source

Publication Only

HemaSphere, Volume 10, Issue S1, June 2026.
wiley   +1 more source

Unified Quantum Gravity: A Covariant Approach to Quantum and Classical Gravity Unification

This paper presents Unified Quantum Gravity (UQG), a novel theoretical framework that unifies quantum mechanics and general relativity by incorporating a dynamically modified metric, an invariant quantum time parameter, and renormalization group corrections.
openaire   +2 more sources

General Covariance and Background Independence in Quantum Gravity

, 2012
The history of general relativity suggests that in absence of experimental data, constructing a theory on philosophical first principles can lead to a very useful theory as well as to ground-breaking insights about physical reality. The two related concepts of general covariance and background independence are some of these principles and play a ...
openaire   +2 more sources