Results 71 to 80 of about 613 (177)
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
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European Physical Journal C: Particles and FieldsThe Moore–Penrose algorithm provides a generalized notion of an inverse, applicable to degenerate matrices. In this paper, we introduce a covariant extension of the Moore–Penrose method that permits to deal with general relativity involving complex non ...
Arthur Garnier, Emmanuele Battista
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An open system approach to gravity
Journal of High Energy PhysicsSeveral major open problems in cosmology — including the nature of inflation, dark matter, and dark energy — share a common structure: they involve spacetime-filling media with unknown microphysics, and can be probed so far only through their ...
Santiago Agüí Salcedo +3 more
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A short introduction to cosmology and its current status
SciPost Physics Lecture NotesThe current cosmological model, known as the $\Lambda$-Cold Dark Matter model (or $\Lambda$CDM for short) is one of the most astonishing accomplishments of contemporary theoretical physics.
Pedro G. Ferreira, Alexander Roskill
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Living Reviews in Relativity, 2010 The observable universe could be a 1+3-surface (the “brane”) embedded in a 1+3+d-dimensional spacetime (the “bulk”), with Standard Model particles and fields trapped on the brane while gravity is free to access the bulk.
Roy Maartens, Kazuya Koyama
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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
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Quantum Vibrational Relativity (QVR) - Version 2.0 Overview: A scalar-field extension of General Relativity in which a single k-essence field with conformal coupling to matter replaces both dark matter particles and a separate cosmological constant.
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A Unified Theory Integrating Quantum Mechanics, General Relativity, and Cosmology
A Unified Theory Integrating Quantum Mechanics, General Relativity, and Cosmology This paper presents a novel theoretical framework that unifies quantum mechanics, general relativity, and cosmology under a single governing equation: U=∫ρ(⟨s∣t⟩)Ψ(⟨t1∣t2⟩)E(f,A) dXU = \int \rho(\langle s|t \rangle) \Psi(\langle t_1|t_2 \rangle) E(f, A) \, dXU=∫ρ(⟨s∣t ...
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Chrono-Grid Dynamics: a discrete unitary framework for emergent gravity
European Physical Journal C: Particles and FieldsWe present a comprehensive and self-contained formulation of Chrono-Grid Dynamics (CGD), a theory in which spacetime and general relativity emerge from a discrete, unitary evolution of a quantum spin network on a spatial lattice.
Nebojša Jovanović
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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.
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