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

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   +2 more sources

Hybrid Loop Quantum Cosmology: An Overview

Frontiers in Astronomy and Space Sciences, 2021
Loop Quantum Gravity is a nonperturbative and background independent program for the quantization of General Relativity. Its underlying formalism has been applied successfully to the study of cosmological spacetimes, both to test the principles and ...
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán   +1 more
doaj   +1 more source

Gauge-Invariant Perturbations at a Quantum Gravity Bounce

Universe, 2022
We study the dynamics of gauge-invariant scalar perturbations in cosmological scenarios with a modified Friedmann equation, such as quantum gravity bouncing cosmologies.
Steffen Gielen, Lisa Mickel
doaj   +1 more source

A Rotating Model of a Light Speed Expanding Hubble-Hawking Universe

Physical Sciences Forum, 2023
Based on light speed expansion, a modified red shift formula, a scaled Hawking’s black hole temperature formula, the super gravity of galactic baryon matter and baby Planck ball, in our recent publications we have clearly established a novel model of ...
U. V. Satya Seshavatharam, S. Lakshminarayana   +1 more
doaj   +1 more source

Beyond General Relativity: Models for Quantum Gravity, Loop Quantum Cosmology and Black Holes

Universe, 2020
In the past two decades, we have witnessed extraordinary progress in precision measurements in cosmology [...]
Nick E. Mavromatos
doaj   +1 more source

L'emergenza dello spazio-tempo nella gravità quantistica e nella cosmologia quantistica

Philosophy Kitchen, 2019
Our best description of spacetime is provided by general relativity – yet, this theory is not thought to be fundamental. Instead, it is expected to be replaced by a theory of quantum gravity, which may not feature spacetime fundamentally.
Karen Crowther
doaj   +1 more source

Switching Internal Times and a New Perspective on the `Wave Function of the Universe’

Universe, 2019
Despite its importance in general relativity, a quantum notion of general covariance has not yet been established in quantum gravity and cosmology, where, given the a priori absence of coordinates, it is necessary to replace classical frames with ...
Philipp A. Höhn
doaj   +1 more source

Does a Theory of Everything Exist?

Философия и космология, 2021
Since Einstein’s failure to define a Grand Unified Theory, physicists have pursued a comprehensive theory explaining nature, a Theory of Everything. But because General Relativity, Quantum Field Theory, and Cosmology have little in common, defining one ...
James R Johnson
doaj   +1 more source

DeWitt boundary condition is consistent in Hořava-Lifshitz quantum gravity

Physics Letters B, 2022
In quantum cosmology the DeWitt boundary condition is a proposal to set the wave function of the universe to vanish at the classical big-bang singularity.
Hiroki Matsui, Shinji Mukohyama, Atsushi Naruko   +2 more
doaj   +1 more source

Einstein and Rastall theories of gravitation in comparison

European Physical Journal C: Particles and Fields, 2018
We profit by a recent paper of Visser claiming that Rastall gravity is equivalent to Einstein gravity to compare the two gravitational theories in a general way. Our conclusions are different from Visser’s ones.
F. Darabi, H. Moradpour, I. Licata, Y. Heydarzade, C. Corda   +4 more
doaj   +1 more source