Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Alcubierre, P."'
Autor:
Alcubierre, Miguel, Barranco, Juan, Bernal, Argelia, Degollado, Juan Carlos, Diez-Tejedor, Alberto, Megevand, Miguel, Núñez, Darío, Sarbach, Olivier
We construct gravitational atoms including self-gravity, obtaining solutions of the Einstein-Klein-Gordon equations for a scalar field surrounding a non-rotating black hole in a quasi-stationary approximation. We resolve the region near the horizon a
Externí odkaz:
http://arxiv.org/abs/2411.18601
Autor:
Joaquin, Carlos, Alcubierre, Miguel
In this paper we consider families of solutions for excited states of Proca stars in spherical symmetry. We focus on the first two excited configurations and perform a series of fully non-linear dynamical simulations in order to study their propertie
Externí odkaz:
http://arxiv.org/abs/2411.09032
The initial state of the spherical gravitational collapse in general relativity has been studied with different methods, especially by using {\it a priori} given equations of state that describe the matter as a perfect fluid. We propose an alternativ
Externí odkaz:
http://arxiv.org/abs/2410.17537
Autor:
Lazarte, Claudio, Alcubierre, Miguel
Initially applied to the scalar case, we extend the applicability of the multi-field generalization with angular momentum of bosonic stars to the vector case, in order to obtain new configurations that generalize the one-field spherical Proca stars.
Externí odkaz:
http://arxiv.org/abs/2401.16360
Autor:
López, José Damián, Alcubierre, Miguel
We consider again stationary solutions to the spherically symmetric Einstein--Maxwell--Klein--Gordon system, commonly known as ``charged boson stars'', originally studied by Jetzer and Van Der Bij. We construct families of charged boson stars in the
Externí odkaz:
http://arxiv.org/abs/2303.04066
Autor:
Alcubierre, Miguel, Barranco, Juan, Bernal, Argelia, Degollado, Juan Carlos, Diez-Tejedor, Alberto, Megevand, Miguel, Núñez, Darío, Sarbach, Olivier
We construct boson star configurations in quantum field theory using the semiclassical gravity approximation. Restricting our attention to the static case, we show that the semiclassical Einstein-Klein-Gordon system for a {\it single real quantum} sc
Externí odkaz:
http://arxiv.org/abs/2212.02530
We study the critical collapse of a massive complex scalar field coupled minimally to gravity. Taking as initial data a simple gaussian pulse with a shape similar to the harmonic ansatz for boson stars, we obtain critical collapse of type type I and
Externí odkaz:
http://arxiv.org/abs/2206.01389
Autor:
Alcubierre, Miguel, Barranco, Juan, Bernal, Argelia, Degollado, Juan Carlos, Diez-Tejedor, Alberto, Jaramillo, Víctor, Megevand, Miguel, Núñez, Darío, Sarbach, Olivier
A new class of complex scalar field objects, which generalize the well known boson stars, was recently found as solutions to the Einstein-Klein-Gordon system. The generalization consists in incorporating some of the effects of angular momentum, while
Externí odkaz:
http://arxiv.org/abs/2112.04529
We study the critical gravitational collapse of a massless scalar field non-minimally coupled to gravity, using a quadratic coupling function with a strength parameter $\xi$. We concentrate on critical phenomena of type II, and determine with an accu
Externí odkaz:
http://arxiv.org/abs/2112.04065
Autor:
Beatriz Alcubierre
Publikováno v:
Historia Mexicana El Colegio de México, Vol 74, Iss 4 (2024)
Externí odkaz:
https://doaj.org/article/1aa6fb8f96f343ac98c1d5c6dd193a5a
