Results 11 to 20 of about 22,563 (95)
Quantum fields during black hole formation: how good an approximation is the Unruh state?
Journal of High Energy Physics, 2018 We study the quantum effects of a test Klein-Gordon field in a Vaidya space-time consisting of a collapsing null shell that forms a Schwazschild black hole, by explicitly obtaining, in a (1 + 1)-dimensional model, the Wightman function, the renormalised ...
Benito A. Juárez-Aubry, Jorma Louko
doaj +1 more source
Gravitational-Wave Instabilities in Rotating Compact Stars
Galaxies, 2022 It is generally accepted that the limit on the stable rotation of neutron stars is set by gravitational-radiation reaction (GRR) driven instabilities, which cause the stars to emit gravitational waves that carry angular momentum away from them.
Eric L. Bratton +5 more
doaj +1 more source
Interacting Ricci-Type Holographic Dark Energy and Dark Sector Couplings
PhysicsWe investigate cosmological scenarios in a spatially flat Friedmann–Lemaître–Robertson–Walker (FLRW) universe containing Ricci-type holographic dark energy within the framework of general relativity.
Carlos Rodriguez-Benites +10 more
doaj +1 more source
ANIAV, 2019 En la revista de arte Artforum de junio de 1966 Robert Smithson (New Jersey, 1938) escribe un inquietante y radical ensayo que llevaba por título Entropía y los nuevos monumentos.
José Maldonado Gómez
doaj +1 more source
Geodesic motion in a stationary dihole spacetime
, 2016 The knowledge of the properties of the different exact solutions modeling binary systems, is a necessary step towards the classification of physically suitable solutions and its corresponding limits of applicability.
Dubeibe, F. L. +1 more
core +1 more source
Teaching Newton’s universal gravitation guided by history and philosophy of science: a didactical propose focusing on argumentation [PDF]
, 2015 Este trabajo presenta una propuesta didáctica para enseñar la gravitación universal de Newton (GU), orientada por la historia y la filosofía de la ciencia (HFC), para promover mejoras en la habilidad de argumentación de los alumnos.
Freire Junior, Olival +2 more
core +3 more sources
Dinámica del sistema solar y sus posibles efectos en eventos meteorológicos extremos en México
Tecnología y ciencias del aguaLa rotación de la Tierra es inconstante, el eje de dirección y la velocidad cambian con el tiempo, por lo que la duración del día (LOD) experimenta cambios de milisegundos; dicha velocidad influye en el clima terrestre.
Daniel Mendoza-Cariño +2 more
doaj +1 more source
Pfaffian Systems, Cartan Connections, and the Null Surface Formulation of General Relativity
UniverseThis review examines the role of differential forms, Pfaffian systems, and hypersurfaces in general relativity. These mathematical constructions provide the essential tools for general relativity, in which the curvature of spacetime—described by the ...
Emanuel Gallo, Carlos Kozameh
doaj +1 more source
Phases of Hadron-Quark Matter in (Proto) Neutron Stars
Universe, 2019 In the first part of this paper, we investigate the possible existence of a structured hadron-quark mixed phase in the cores of neutron stars. This phase, referred to as the hadron-quark pasta phase, consists of spherical blob, rod, and slab rare phase ...
Fridolin Weber +6 more
doaj +1 more source
Cosmological constraints for a two brane-world system with single equation of state
, 2011 We present the study of two 3-brane system embedded in a 5-dimensional space-time in which the fifth dimension is compactified on a $S^{1}/Z_{2}$ orbifold. Assuming isotropic, homogeneous, and static branes, it can be shown that the dynamics of one brane
Cordero, Ruben +2 more
core +1 more source