Zobrazeno 1 - 10
of 652
pro vyhledávání: '"Brihaye, Y."'
Autor:
Brihaye, Y., Buisseret, F.
Publikováno v:
Physical Review D 109, 076029 (2024)
We construct Q-ball solutions from a model consisting of one massive scalar field $\xi$ and one massive complex scalar field $\phi$ interacting via the cubic couplings $g_1 \xi \phi^{*} \phi + g_2 \xi^3$, typical of Henon-Heiles-like potentials. Alth
Externí odkaz:
http://arxiv.org/abs/2402.15396
Autor:
Buisseret, F., Brihaye, Y.
Publikováno v:
Phys Rev D 106, 105204 (2022)
We discuss the conditions under which static, finite-energy, configurations of a complex scalar field $\phi$ with constant phase and spherically symmetric norm exist in a potential of the form $V(\phi^*\phi, \phi^N+\phi^{*N})$ with $N\in\mathbb{N}$ a
Externí odkaz:
http://arxiv.org/abs/2209.12284
We study charged and radially excited boson stars in both asymptotically flat as well as asymptotically Anti-de Sitter space-time. We demonstrate that two different types of radially excited solutions exist~: one that persists in the linear limit of
Externí odkaz:
http://arxiv.org/abs/2209.07978
We study Proca stars in a vector-tensor gravity model inspired by Horndeski's generalized Einstein-Maxwell field equations, supplemented with a mass term for the vector field. We discuss the effects of the non-minimal coupling term on the properties
Externí odkaz:
http://arxiv.org/abs/2109.12345
Autor:
Brihaye, Y., Hartmann, B.
We study standard Einstein-Maxwell theory minimally coupled to a complex valued and self-interacting scalar field. We demonstrate that new, previously unnoticed spherically symmetric, charged black hole solutions with scalar hair exist in this model
Externí odkaz:
http://arxiv.org/abs/2108.02248
Autor:
Brihaye, Y., Verbin, Y.
Publikováno v:
Phys. Rev. D 104, 024047 (2021)
The vector-tensor Horndeski theory is supplemented by a real, massless scalar field non-minimally coupled to the Horndeski interaction term. The generic dyonic Reissner-Nordstrom solutions characterized by electric and magnetic charges, acquire an in
Externí odkaz:
http://arxiv.org/abs/2105.11402
In this paper, we demonstrate that a phenomenon described as "topological inflation" during which inflation occurs inside the core of topological defects, has a non-topological counterpart. This appears in a simple set-up containing Einstein gravity
Externí odkaz:
http://arxiv.org/abs/2010.15625
Autor:
Brihaye, Y., Buisseret, F.
Publikováno v:
Symmetry 2020, 12(10), 1668 -- Introduction significantly modified in published version
The equation of state of SU(3) Yang-Mills theory can be modelled by an effective $Z_3-$symmetric potential $V(\vert\phi\vert,\phi^3+\phi^{3*}, T)$ depending on the temperature $T$ and on a scalar field $\phi$ -- the averaged Polyakov loop. Allowing $
Externí odkaz:
http://arxiv.org/abs/2009.01038
Autor:
Brihaye, Y., Renaux, J.
The Einstein-Maxwell-Klein-Gordon Lagrangian is supplemented by a non-minimal coupling of the real scalar field to the Gauss-Bonnet invariant. The non minimal coupling function is chosen as a general second degree polynomial in the scalar field for w
Externí odkaz:
http://arxiv.org/abs/2004.12138
We discuss boson stars and neutron stars, respectively, in a scalar-tensor gravity model with an explicitly time-dependent real scalar field. While the boson stars in our model -- in contrast to the neutron stars -- do not possess a hard core, we fin
Externí odkaz:
http://arxiv.org/abs/2004.08292