Results 61 to 70 of about 2,648,408 (181)

A Non-Polynomial Gravity Formulation for Loop Quantum Cosmology Bounce

open access: yesGalaxies, 2017
Recently the so-called mimetic gravity approach has been used to obtain corrections to the Friedmann equation of General Relativity similar to the ones present in loop quantum cosmology.
Stefano Chinaglia   +2 more
doaj   +1 more source

Harrison's interpretation of the cosmological redshift revisited [PDF]

open access: yes, 2009
Harrison's argument against the interpretation of the cosmological redshift as a Doppler effect is revisited, exaggerated, and discussed. The context, purpose, and limitations of the interpretations of this phenomenon are clarified.
arxiv   +1 more source

Purpose and Providence in Evolutionary Perspective: Considerations for Theological Anthropology in Light of Biocultural Evolution and Genetic Engineering

open access: yesThe Heythrop Journal, EarlyView.
Abstract We argue here that bringing insights from evolution and bioengineering to bear on traditional accounts of divine providence helps to illustrate just how complex providence is and how difficult it is to achieve. While other non‐human animals might exhibit greater agency in creation and its evolutionary development than has traditionally been ...
Michael Burdett, Andrew Jackson
wiley   +1 more source

The simplicity of physical laws

open access: yesNoûs, EarlyView.
Abstract Physical laws are strikingly simple, yet there is no a priori reason for them to be so. I propose that nomic realists—Humeans and non‐Humeans—should recognize simplicity as a fundamental epistemic guide for discovering and evaluating candidate physical laws.
Eddy Keming Chen
wiley   +1 more source

Similarity accounts of counterfactuals: A reality check1

open access: yesPhilosophy and Phenomenological Research, EarlyView.
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

DeWitt boundary condition is consistent in Hořava-Lifshitz quantum gravity

open access: yesPhysics 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   +2 more
doaj  

Generalized non-local R 2-like inflation

open access: yesJournal of High Energy Physics, 2023
The R 2 inflation which is an extension of general relativity (GR) by quadratic scalar curvature introduces a quasi-de Sitter expansion of the early Universe governed by Ricci scalar being an eigenmode of d’Alembertian operator.
Alexey S. Koshelev   +2 more
doaj   +1 more source

Place as a Metaphysical Problem in Albert the Great and Thomas Aquinas

open access: yesModern Theology, Volume 41, Issue 2, Page 292-310, April 2025.
Abstract Thomas Aquinas’ particular synthesis of Aristotelianism and Neoplatonism, and the intellectual tradition it inaugurated, has at least twice faced critical challenges from developments in physics. Besieged by the sixteenth and seventeenth century novatores and more or less ignored by the nineteenth‐ and twentieth‐century practitioners of ...
Onsi Aaron Kamel
wiley   +1 more source

Brane-World Gravity

open access: yesLiving Reviews in Relativity, 2004
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.
Maartens Roy
doaj  

Euler–Heisenberg Black Hole Surrounded by Quintessence in the Background of Perfect Fluid Dark Matter: Thermodynamics, Shadows, and Quasinormal Modes

open access: yesFortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, the simultaneous effects of these dark sectors on the Euler–Heisenberg black hole are investigated, using the quintessence matter field and perfect fluid to model them. In particular, the black hole's thermodynamics,
Bilel Hamil, Bekir Can Lütfüoğlu
wiley   +1 more source

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