Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Muharlyamov, Ruslan K."'
We investigate anisotropic and homogeneous cosmological models in the scalar-tensor theory of gravity with non-minimal kinetic coupling of a scalar field to the curvature given by the function $\eta\cdot(\phi/2)\cdot G_{\mu\nu}\,\nabla^\mu \nabla^\nu
Externí odkaz:
http://arxiv.org/abs/2407.03683
Publikováno v:
Modern Physics Letters A, Vol. 39, No. 17n18, 2450085 (2024)
We study the evolution of Bianchi-I space-times within the framework of the Horndeski theory with $G_5=\text{const}/X$. The space-times are filled a global unidirectional electromagnetic field interacting with a scalar field. We consider the minimal
Externí odkaz:
http://arxiv.org/abs/2403.15158
Publikováno v:
Modern Physics Letters A, 2250108 (2022)
In the previous article Eur. Phys. J. Plus 136, 590 (2021) (arXiv: 2110.15396) we have proposed a reconstruction method for the kinetic gravity braiding theory in the framework of the flat Friedman-Robertson-Walker spacetime. Here we develop this met
Externí odkaz:
http://arxiv.org/abs/2111.10877
Publikováno v:
Eur. Phys. J. Plus 136, 590 (2021)
We present a reconstruction method for flat Friedman-Robertson-Walker (FRW) spacetime in a subclass of Horndeski theory -- specifically shiftsymmetric, the kinetic gravity braiding (KGB) theory with a non-vanishing conserved current. Choosing the for
Externí odkaz:
http://arxiv.org/abs/2110.15396
Publikováno v:
Indian J Phys (2022)
In the Bianchi I cosmology some subclasses of the Horndeski theory allow for the non-standard anisotropy behavior. For example, the anisotropy is damped near the initial singularity instead of tending to infinity. In this article, we analyze the nonl
Externí odkaz:
http://arxiv.org/abs/2110.14630
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Publikováno v:
Chinese Physics C; Nov2024, Vol. 48 Issue 11, p1-12, 12p
Publikováno v:
Eur. Phys. J. D 68: 159, 2014
We consider one cosmological application of an axionic extension of the Maxwell-Vlasov theory, which describes axionically induced oscillatory regime in the state of global magnetic field evolving in the anisotropic expanding (early) universe. We sho
Externí odkaz:
http://arxiv.org/abs/1404.4479
Publikováno v:
Eur. Phys. J. C 73: 2647, 2013
We consider cosmological applications of a new self-consistent system of equations, accounting for a nonminimal coupling of the gravitational, electromagnetic and pseudoscalar (axion) fields in a relativistic plasma. We focus on dispersion relations
Externí odkaz:
http://arxiv.org/abs/1310.5333
Publikováno v:
Class. Quantum Grav. 31: 025005, 2014
We establish a new self-consistent system of equations accounting for a nonminimal coupling of the cooperative gravitational, electromagnetic and pseudoscalar (axion) fields in a multi-component relativistic plasma. The axionic extension of the nonmi
Externí odkaz:
http://arxiv.org/abs/1309.3889