Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Núñez, Darío"'
Solving the Einstein-Klein-Gordon-Maxwell system, we construct and analyze the properties of an electrically charged wormhole, formed from a complex, massive scalar field, with self-interaction, and endowed with an electric charge. The scalar field i
Externí odkaz:
http://arxiv.org/abs/2310.11054
We study the Einstein-Klein-Gordon system coupled to the Born-Infeld electrodynamics. We explore the solution space of a static spherically symmetric, complex scalar field minimally coupled to both gravitational and electromagnetic fields. The result
Externí odkaz:
http://arxiv.org/abs/2303.13666
We present the ${\cal E}$-boson star: A novel configuration of a boson star with an exotic matter nucleus; the exotic matter being described by a real massive scalar field with self-interaction term and kinetic term of the opposite sign. The other sc
Externí odkaz:
http://arxiv.org/abs/2302.07889
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
Autor:
Villegas, Laura O., Ramirez-Codiz, Eduardo, Jaramillo, Víctor, Degollado, Juan Carlos, Moreno, Claudia, Núñez, Darío, Romero-Cruz, Fernando J.
We present a method to determine the angular momentum of a black hole, based on observations of the trajectories of the bodies in the Kerr space-time. We use the Hamilton equations to describe the dynamics of a particle and present results for equato
Externí odkaz:
http://arxiv.org/abs/2211.10464
Autor:
Aguilar-Nieto, Alejandro, Jaramillo, Víctor, Barranco, Juan, Bernal, Argelia, Degollado, Juan Carlos, Núñez, Darío
Long-lived configurations of massive scalar fields around black holes may form if the coupling between the mass of the scalar field and the mass of the black hole is very small. In this work we analyze the effect of self-interaction in the distributi
Externí odkaz:
http://arxiv.org/abs/2211.10456
Autor:
Corichi, Alejandro, Núñez, Dario
Publikováno v:
Rev. Mex. Fis. 37, No 4, 720-747 (1991)
The authors present concepts and mathematical developments which give rise to the Hamiltonian formulation of Einstein's general relativity, first introduced by Arnowitt, Deser, and Misner. All the geometrical quantities needed for the construction ar
Externí odkaz:
http://arxiv.org/abs/2210.10103
Autor:
Jaramillo, Víctor, Núñez, Darío
We solve the Einstein-Maxwell-Klein-Gordon system of equations and derive a compact, static axially symmetric magnetized object which is electrically neutral and made of two complex massive charged scalar fields. We describe several properties of suc
Externí odkaz:
http://arxiv.org/abs/2209.07549
Autor:
Jaramillo, Víctor, Sanchis-Gual, Nicolas, Barranco, Juan, Bernal, Argelia, Degollado, Juan Carlos, Herdeiro, Carlos, Megevand, Miguel, Núñez, Darío
Fully non-linear numerical evolutions of the Einstein-(multi)--Klein-Gordon equations are performed to study head-on collisions of $\ell$-boson stars. Despite being spherically symmetric, $\ell$-boson stars have a (hidden) frame of reference, used in
Externí odkaz:
http://arxiv.org/abs/2202.00696
Modelling as a dipole the magnetic interaction of a binary system of neutron stars, we are able to include the magnetic effects in the Newtonian and in the inspiral dynamics of the system using an equivalent one-body description. Furthermore, in the
Externí odkaz:
http://arxiv.org/abs/2201.02287