Results 331 to 340 of about 186,264 (366)

Entanglement in Markovian hybrid classical-quantum theories of gravity

Physical Review D
The entangling properties of models of classical gravity interacting with quantum matter (i.e., hybrid models of gravity) are investigated in the context of the experimental proposals to detect gravitationally induced entanglement. We prove that entanglement generation can indeed take place within these models, and characterize it quantitatively.
Oliviero Angeli, Matteo Carlesso
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Classical limit of anSU(2)�U(1) gauge field theory for gravity

International Journal of Theoretical Physics, 1988
It is shown that the ground state of a Yang-Mills theory for gravity proposed by us induces in the classical limit the closed Einstein universe and its tangent space (Minkowski space), respectively.
H. Dehnen, F. Ghaboussi, H. Frommert
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CLASSICAL INSTABILITY OF THE EINSTEIN-GAUSS-BONNET GRAVITY THEORY WITH COMPACTIFIED HIGHER DIMENSIONS

International Journal of Modern Physics A, 1991
The energy spectrum and stability of the effective theory resulting from the Einstein-Gauss-Bonnet gravity theory with compactified internal space are investigated. The internal space can evolve in its volume and/or shape, giving rise to a system of scalar fields in the external space-time.
LESZEK M. SOKOŁOWSKI, ZDZISŁAW A. GOLDA, MARCO LITTERIO, LUCA AMENDOLA   +3 more
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The timelessness of quantum gravity: I. The evidence from the classical theory

Classical and Quantum Gravity, 1994
The issue of time is addressed. It is argued that time as such does not exist but that instants, defined as complete relative configurations of the universe, do. It is shown how the classical mechanics (both non-relativistic and generally relativistic) of a complete universe can be expressed solely in terms of such relative configurations.
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Classical and quantum aspects of infinite derivative field theories and infinite derivative gravity

2023
Στόχος της παρούσας διατριβής είναι η μελέτη των κλασικών και κβαντικών πτυχών των θεωριών πεδίου με άπειρες παραγώγους και της βαρύτητας με άπειρες παραγώγους. Οι θεωρίες βαρύτητας με άπειρες παραγώγους μπορούν να απαλλαγούν από φαντάσματα και κλασικές ιδιομορφίες.
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Noether symmetry analysis in f(T,TG) gravity theory: A study of classical cosmology

International Journal of Geometric Methods in Modern Physics
This work deals with [Formula: see text] gravity in the background of homogeneous and isotropic flat Friedmann–Lemaître–Robertson–Walker (FLRW) space-time model. The main aim of this work is to examine whether the model supports the observational data or not.
Dipankar Laya, Sourav Dutta, Subenoy Chakraborty   +2 more
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Temporal Energy: An Extension of Classical Gravity and Nuclear Interaction Theory

Abstract This paper proposes a unified model of fundamental interactions based on the redistribution of temporal energy — a physical property associated with matter’s progression through time. The model interprets gravity and nuclear forces as manifestations of temporal gradients, offering an alternative to classical descriptions in General Relativity
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Unified Scalar Field Theory of Gravity: Classical, Quantum, and Phenomenological Perspectives

We propose a unified scalar field theory of gravity involving two real scalar fields: ΦG, which modifies gravitational interactions, and ΦT, which encodes the local flow of time. This framework unifies classical and quantum dynamics, including inflationary cosmology, entropy production, dark matter relic abundance, photon lensing, gravitational time ...
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A Theory of UV-Complete Gravity: Unifying Gravity and the Standard Model While Resolving Classical Singularities

Abstract We propose a novel approach to quantum gravity based on spectral geometry, wherein gravitational and gauge dynamics emerge from a deformation of the Dirac operator. This deformation is encoded in a symmetric tensor field Θµν(x), which in- troduces six additional degrees of freedom (DOFs) beyond the standard metric-based framework.
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Classical theories of gravity on PL manifolds

2023
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