Results 101 to 110 of about 2,562 (178)

On the Geometric Meaning of General Relativity and the Foundations of Newtonian Cosmology

AppliedMath
The geometric foundations of General Relativity are revisited here, with particular attention to its gauge invariance, as a key to understanding the true nature of spacetime.
Jaume de Haro, Emilio Elizalde
doaj   +1 more source

Axiomatic formulations of modified gravity theories with nonlinear dispersion relations and Finsler–Lagrange–Hamilton geometry

European Physical Journal C: Particles and Fields, 2018
We develop an axiomatic geometric approach and provide an unconventional review of modified/nonlinear gravity theories, MGTs, with modified dispersion relations, MDRs, encoding Lorentz invariance violations, LIVs, classical and quantum random effects ...
Laurenţiu Bubuianu, Sergiu I. Vacaru
doaj   +1 more source

The Quantum Chromodynamics Gas Density Drop and the General Theory of Relativity Ether

Journal of High Energy Physics Gravitation and Cosmology, 2023
Rami Rom
semanticscholar   +1 more source

The Quantum Memory Matrix: A Unified Framework for the Black Hole Information Paradox

Entropy
We present the Quantum Memory Matrix (QMM) hypothesis, which addresses the longstanding Black Hole Information Paradox rooted in the apparent conflict between Quantum Mechanics (QM) and General Relativity (GR).
Florian Neukart, Reuben Brasher, Eike Marx   +2 more
doaj   +1 more source

Power-series dynamics equation of fields based on geometric algebra and high-order covariant-derivative schemes

AIP Advances
Based on previous work, we explore in the context of quantum field theory and cosmology a geometric algebra (GA)-based approach to field dynamics through a multi-derivative power-series equation.
R. W. Haase
doaj   +1 more source

A review of basic results on the Bose–Einstein condensate dark matter model

Frontiers in Astronomy and Space Sciences
We review basic results on the Bose–Einstein condensate dark matter (BECDM) model. Self-gravitating BECs experience a collisionless process of gravitational cooling and violent relaxation, leading to BECDM halos with a “core-envelope” structure.
Pierre-Henri Chavanis, Pierre-Henri Chavanis   +1 more
doaj   +1 more source

Quantum Field Theory of Black Hole Perturbations with Backreaction: I General Framework

Universe
In a seminal work, Hawking showed that natural states for free quantum matter fields on classical spacetimes that solve the spherically symmetric vacuum Einstein equations are KMS states of non-vanishing temperature.
Thomas Thiemann
doaj   +1 more source

Quantum Effects on Cosmic Scales as an Alternative to Dark Matter and Dark Energy

Universe
The spin-torsion theory is a gauge theory approach to gravity that expands upon Einstein’s general relativity (GR) by incorporating the spin of microparticles. In this study, we further develop the spin-torsion theory to examine spherically symmetric and
Da-Ming Chen, Lin Wang
doaj   +1 more source

Quantum cosmology of pure connection general relativity [PDF]

, 2022
Steffen Gielen, Elliot Nash
openalex   +1 more source

Cosmological Special Theory of Relativity, Cosmological Quantum Physics, Cosmological Uncertainty Principles, Cosmological General Theory of Relativity

Sangwha Yi
  +4 more sources