Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Choptuik, Matthew"'
We investigate the dynamics of $U(1)$ gauged Q-balls using fully three-dimensional numerical simulations. We consider two different scenarios: first, the classical stability of gauged Q-balls with respect to generic three-dimensional perturbations, a
Externí odkaz:
http://arxiv.org/abs/2408.07561
Publikováno v:
Phys. Rev. D 110, 015012 (2024)
We investigate the collision dynamics of $U(1)$ gauged Q-balls by performing high-resolution numerical simulations in axisymmetry. Focusing on the case of relativistic head-on collisions, we consider the effects of the initial velocity, relative phas
Externí odkaz:
http://arxiv.org/abs/2404.04323
Autor:
Reid, Gray D., Choptuik, Matthew W.
The hyperbolic formulations of numerical relativity due to Baumgarte, Shapiro, Shibata & Nakamura (BSSN) and Nagy Ortiz & Reula (NOR), among others, achieve stability through the effective embedding of general relativity within the larger Z4 system.
Externí odkaz:
http://arxiv.org/abs/2309.05094
Autor:
Reid, Gray D., Choptuik, Matthew W.
As shown by Marunovic and Murkovic, non-minimal d-stars, composite structures consisting of a boson star and a global monopole non-minimally coupled to the general relativistic field, can have extremely high gravitational compactness. In a previous p
Externí odkaz:
http://arxiv.org/abs/2308.09781
Autor:
Reid, Gray D., Choptuik, Matthew W.
We report on critical phenomena in the gravitational collapse of the electromagnetic field in axisymmetry using cylindrical coordinates. We perform detailed numerical simulations of four families of dipole and quadrupole initial data fine-tuned to th
Externí odkaz:
http://arxiv.org/abs/2308.03943
Unlike conventional grid and mesh based methods for solving partial differential equations (PDEs), neural networks have the potential to break the curse of dimensionality, providing approximate solutions to problems where using classical solvers is d
Externí odkaz:
http://arxiv.org/abs/2304.14994
Publikováno v:
Phys. Rev. D 107, 035022 (2023)
We study the dynamics of $U(1)$ gauged Q-balls using fully non-linear numerical evolutions in axisymmetry. Focusing on two models with logarithmic and polynomial scalar field potentials, we numerically evolve perturbed gauged Q-ball configurations in
Externí odkaz:
http://arxiv.org/abs/2211.11198
Publikováno v:
Phys. Rev. Lett. 123, 131101 (2019)
We propose that stable boson stars generically fall within an infinite-parameter family of solutions that oscillate on any number of non-commensurate frequencies. We numerically construct two-frequency solutions and explore their parameter space. The
Externí odkaz:
http://arxiv.org/abs/1904.02168
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Phys. Rev. Lett. 121, 021103 (2018)
We propose the existence of an infinite-parameter family of solutions in AdS that oscillate on any number of non-commensurate frequencies. Some of these solutions appear stable when perturbed, and we suggest that they can be used to map out the AdS "
Externí odkaz:
http://arxiv.org/abs/1803.02830