Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Volkov, Mikhail S."'
Autor:
Gervalle, Romain, Volkov, Mikhail S.
Publikováno v:
Phys.Rev.Lett. 133 (2024) 17, 171402
We construct static and axially symmetric magnetically charged hairy black holes in the gravity-coupled Weinberg-Salam theory. Large black holes merge with the Reissner-Nordstr\"om (RN) family, while the small ones are extremal and support a hair in
Externí odkaz:
http://arxiv.org/abs/2406.14357
Autor:
Gervalle, Romain, Volkov, Mikhail S.
We construct the multi-charge generalizations for the electroweak magnetic monopole solution of Cho and Maison within a wide range of values of the magnetic charge. We use the same ansatz for the axially symmetric fields as the one previously employe
Externí odkaz:
http://arxiv.org/abs/2211.04875
Autor:
Gervalle, Romain, Volkov, Mikhail S.
We apply a generalized field ansatz to describe the spherically symmetric sector of classical solutions of the electroweak theory. This sector contains Abelian magnetic monopoles labeled by their magnetic charge $n=\pm 1,\pm 2,\ldots$, the non-Abelia
Externí odkaz:
http://arxiv.org/abs/2203.16590
Autor:
Volkov, Mikhail S.
We analyze possibilities to obtain a globally regular stationary generalization for the ultrastatic wormhole with a repulsive scalar field found by Bronnikov and by Ellis in 1973. The extreme simplicity of this static solution suggests that its stati
Externí odkaz:
http://arxiv.org/abs/2109.14496
Autor:
Galeev, Rafkat, Muharlyamov, Ruslan, Starobinsky, Alexei A., Sushkov, Sergey V., Volkov, Mikhail S.
Publikováno v:
Phys. Rev. D 103, 104015 (2021)
It was found recently that the anisotropies in the homogeneous Bianchi I cosmology considered within the context of a specific Horndeski theory are damped near the initial singularity instead of being amplified. In this work we extend the analysis of
Externí odkaz:
http://arxiv.org/abs/2102.10981
Autor:
Gervalle, Romain, Volkov, Mikhail S.
Publikováno v:
Phys. Rev. D 102, 124040 (2020)
We study asymptotically flat black holes with massive graviton hair within the ghost-free bigravity theory. There have been contradictory statements in the literature about their existence -- such solutions were reported some time ago, but later a di
Externí odkaz:
http://arxiv.org/abs/2008.13573
Publikováno v:
Phys. Rev. D 101, 064039 (2020)
We consider anisotropic cosmologies in a particular shift-symmetric Horndeski theory containing the $G^{\mu\nu}\partial_\mu\phi \partial_\nu\phi$ coupling, where $G^{\mu\nu}$ is the Einstein tensor. This theory admits stable in the future self-accele
Externí odkaz:
http://arxiv.org/abs/1912.12320
Autor:
Helpin, Thomas, Volkov, Mikhail S.
We study the metric-affine versions of scalar-tensor theories whose connection enters the action only algebraically. We show that the connection can be integrated out in this case, resulting in an equivalent metric theory. Specifically, we consider t
Externí odkaz:
http://arxiv.org/abs/1911.12768
Autor:
Helpin, Thomas, Volkov, Mikhail S.
We analyse what happens when the Horndeski Lagrangian is varied within the Palatini approach by considering the metric and connection as independent variables. Assuming the connection to be torsionless, there can be infinitely many metric-affine vers
Externí odkaz:
http://arxiv.org/abs/1906.07607
Autor:
Gervalle, Romain, Volkov, Mikhail S.
Publikováno v:
In Nuclear Physics, Section B February 2023 987
