Results 51 to 60 of about 852 (180)
A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos
Annalen der Physik, Volume 538, Issue 3, March 2026.A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças +4 more
wiley +1 more source
A Physical Causality—Information Manifold With a Pythagorean Metric in Special Relativity
Advances in Mathematical PhysicsThe spacetime vectors with the Minkowski metric are cornerstones of special relativity, with the Minkowski metric and physical causality invariant under the Lorentz transformation.
Roland Riek
doaj +1 more source
A Re‐Examination of Foundational Elements of Cosmology
Fortschritte der Physik, Volume 74, Issue 3, March 2026.ABSTRACT This paper undertakes a conceptual re‐examination of several foundational elements of cosmology through the lens of spacetime symmetries. A new derivation of the Friedmann–Lemaître–Robertson–Walker metric is obtained by a careful conceptual examination of rotations and translations on generic manifolds, followed by solving the rotational and ...
Lavinia Heisenberg
wiley +1 more source
Are non-vacuum states much relevant for retrieving shock wave memory of spacetime?
Physics Letters B, 2020 Shock wave gives back reaction to spacetime and the information is stored in the memory of background. Quantum memory effect of localised shock wave on Minkowski metric is investigated here.
Bibhas Ranjan Majhi
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Fortschritte der Physik, Volume 74, Issue 3, March 2026.ABSTRACT We propose a manifestly duality‐invariant, Lorentz‐invariant, and local action to describe quantum electrodynamics in the presence of magnetic monopoles that derives from Sen's formalism. By employing field strengths as the dynamical variables, rather than potentials, this formalism resolves longstanding ambiguities in prior frameworks.
Aviral Aggarwal +2 more
wiley +1 more source
Instability thresholds for de Sitter and Minkowski spacetimes in holographic semiclassical gravity
Journal of High Energy PhysicsWe study the stability of d-dimensional (d = 3, 4, 5) de Sitter and Minkowski spacetimes within the framework of semiclassical gravity sourced by a strongly coupled quantum field with a gravity dual.
Akihiro Ishibashi +2 more
doaj +1 more source
The Distinctness of Objects Near and Far
Philosophy and Phenomenological Research, Volume 112, Issue 2, Page 406-420, March 2026.ABSTRACT Philosophers working on the metaphysics of persistence typically do not extend their views to the distinctness of objects at a single time. I argue that we can provide criteria to distinguish objects across time if and only if we can provide criteria to distinguish objects at a time. Furthermore, I endorse a stronger claim.
Erica Shumener
wiley +1 more source
Sphalerons and conformally compactified minkowski spacetime
Physics Letters B, 1995 12 pages, tex, 2 references and comment ...
Gibbons, G. W., Steif, Alan R.
openaire +2 more sources
Coloring and density theorems for configurations of a given volume
Proceedings of the London Mathematical Society, Volume 132, Issue 3, March 2026.Abstract This is a treatise on finite point configurations spanning a fixed volume to be found in a single color‐class of an arbitrary finite (measurable) coloring of the Euclidean space Rn$\mathbb {R}^n$, or in a single large measurable subset A⊆Rn$A\subseteq \mathbb {R}^n$.
Vjekoslav Kovač
wiley +1 more source
Revisiting Quantum Field Theory in Rindler Spacetime with Superselection Rules
UniverseQuantum field theory (QFT) in Rindler spacetime is a gateway to understanding unitarity and information loss paradoxes in curved spacetime. Rindler coordinates map Minkowski spacetime onto regions with horizons, effectively dividing accelerated observers
K. Sravan Kumar, João Marto
doaj +1 more source