Results 181 to 190 of about 1,342,913 (205)

Synchronizations in Complex Systems Dynamics Through a Multifractal Procedure. [PDF]

Entropy (Basel)
Ghizdovat V, Mirila DC, Nedeff F, Rusu DI, Rusu O, Agop M, Vasincu D.   +6 more
europepmc   +1 more source

Dressing vs. Fixing: On How to Extract and Interpret Gauge-Invariant Content. [PDF]

Found Phys
Berghofer P, François J.
europepmc   +1 more source

Eliminating the 'Impossible': Recent Progress on Local Measurement Theory for Quantum Field Theory. [PDF]

Found Phys
Papageorgiou M, Fraser D.
europepmc   +1 more source

The volume operator in covariant quantum gravity [PDF]

Classical and Quantum Gravity, 2010
10 pages. Version 2: proof extended to gamma > 1.
Carlo Rovelli, You Ding
exaly   +5 more sources

Numerical analysis of the self-energy in covariant loop quantum gravity

Physical Review D, 2022
We study numerically the first order radiative corrections to the self-energy, in covariant loop quantum gravity. We employ the recently developed 'sl2cfoam-next' spinfoam amplitudes library, and some original numerical methods. We analyze the scaling of the divergence with the infrared cutoff, for which previous analytical estimates provided widely ...
Francesco Gozzini, Francesca Vidotto, Pietropaolo Frisoni   +2 more
exaly   +4 more sources

Outline of a generally covariant quantum field theory and a quantum theory of gravity [PDF]

Journal of Mathematical Physics, 1995
We study a tentative generally covariant quantum field theory, denoted the T theory, as a tool to investigate the consistency of quantum general relativity. The theory describes the gravitational field and a minimally coupled scalar field; it is based on the loop representation, and on a certain number of quantization choices.
Carlo Rovelli
exaly   +3 more sources

Repulsive effect of covariant effective quantum gravity

Physical Review D
In General Relativity, gravity around a black hole is universally regarded as an attractive force. However, quantum effects may significantly alter this classical picture and thus affect the dynamics of test particles. In this work, we investigate geodesic motion in a recently proposed covariant effective quantum black hole model, the ZLMY type I model
Bing Sun, Yan LIU
exaly   +3 more sources

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General covariance of the path integral for quantum gravity

Physical Review D, 1991
We construct the functional integration measure over four-geometries in the path integral for quantum gravity by means of a geometric, manifestly covariant approach, similar to that used by Polyakov for string theory. This generalizes the previous one-loop method of Mazur and Mottola to all orders of perturbation theory. We compare this measure to that
, Bern, , Blau, , Mottola
openaire   +2 more sources

Covariant Loop Quantum Gravity

2014
Quantum gravity is among the most fascinating problems in physics. It modifies our understanding of time, space and matter. The recent development of the loop approach has allowed us to explore domains ranging from black hole thermodynamics to the early Universe.
Rovelli, Carlo, Vidotto, Francesca
openaire   +2 more sources

Quantum Gravity from the Point of View of Locally Covariant Quantum Field Theory [PDF]

Communications in Mathematical Physics, 2016
44 pages, updated to the published ...
Kasia Rejzner, Klaus Fredenhagen, Romeo Brunetti   +2 more
exaly   +5 more sources