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Cosmological Dynamics of Interacting Dark Energy and Dark Matter in f(Q)$f(Q)$ Gravity
Fortschritte der Physik, Volume 73, Issue 5, May 2025.Abstract In this work, the behavior of interacting dark energy (DE) and dark matter (DM) within a model of f(Q)$f(Q)$ gravity is explored, employing the standard framework of dynamical system analysis. The power‐law f(Q)$f(Q)$ model is considered, incorporating two different forms of interacting DE and DM: 3αHρm$3\alpha H\rho _m$ and α3HρmρDE$\frac ...
Gaurav N. Gadbail +3 more
wiley +1 more source
Quantum Cosmological Relational Model of Shape and Scale in 1-d
, 2011 Relational particle models are useful toy models for quantum cosmology and the problem of time in quantum general relativity. This paper shows how to extend existing work on concrete examples of relational particle models in 1-d to include a notion of ...
Abramowitz M +82 more
core +1 more source
Similarity accounts of counterfactuals: A reality check1
Philosophy and Phenomenological Research, Volume 110, Issue 3, Page 887-915, May 2025.Abstract To an unusual extent, philosophers agree that counterfactuals have truth conditions involving the most similar possible worlds where their antecedents are true, in the style of the celebrated and path‐breaking Stalnaker/Lewis accounts. Roughly, these accounts say that the counterfactual if A were the case, C would be the case is true if and ...
Alan Hájek
wiley +1 more source
Darkness without dark matter and energy – generalized unimodular gravity
Physics Letters B, 2017 We suggest a Lorentz non-invariant generalization of the unimodular gravity theory, which is classically equivalent to general relativity with a locally inert (devoid of local degrees of freedom) perfect fluid having an equation of state with a constant ...
A.O. Barvinsky, A.Yu. Kamenshchik
doaj +1 more source
19 pages, 2 figures. A contribution to the book "Open Issues in Gravitation and Cosmology - Original Contributions, Essays and Recollections in Honor of Alexei Starobinsky", to be published by Springer, edited by Andrei Barvinsky and Alexander ...
Lukash, Vladimir N., Mikheeva, Elena V.
openaire +2 more sources
Zagadnienia Filozoficzne w Nauce, 2012 The mathematical and cosmological works of a group associated with the Copernicus Center for Interdisciplinary Studies in Cracow are summarized. The group consists mainly of M. Heller, L. Pysiak, W. Sasin, Z. Odrzygóźdź and J. Gruszczak.
Michał Heller
doaj
Cosmic Inflation, Quantum Information and the Pioneering Role of John S Bell in Cosmology
Universe, 2019 According to the theory of cosmic inflation, the large scale structures observed in our Universe (galaxies, clusters of galaxies, Cosmic Background Microwave—CMB—anisotropy…) are of quantum mechanical origin. They are nothing but vacuum
Jérôme Martin
doaj +1 more source
Intermediate Inflation in the Jordan-Brans-Dicke Theory
, 2012 We present an intermediate inflationary stage in a Jordan-Brans-Dicke theory. In this scenario we analyze the quantum fluctuations corresponding to adiabatic and isocurvature modes.
Cid, Antonella, del Campo, Sergio
core +1 more source
Nisti-Hasti Framework — Unifying General Relativity, Quantum Mechanics, and Cosmology
The Nisti-Hasti framework introduces two fundamental components—Nisti (dynamic quantum vacuum fluctuations) and Hasti (conversion of matter into spacetime geometry)—to unify four major problems in modern physics (dark energy, dark matter, the black hole information paradox, and quantum gravity) into a single mathematical structure.
Bozorg amin, Bozorg amin
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This paper presents a novel quantum-cosmological equation aimed at addressing the singularity problem in general relativity by introducing quantum corrections. The equation seeks to unify quantum mechanics and general relativity, offering a pathway for the regularization of singularities in black holes and the early universe.
openaire +5 more sources