Zobrazeno 1 - 10
of 275
pro vyhledávání: '"Saavedra, Joel"'
Publikováno v:
Phys. Dark Univ. 46, 101580 (2024)
In the framework of Einstein's gravity, we study the thermodynamic equation state, $P=P(V,T)$, associated with a flat Friedmann-Lemaitre-Robertson-Walker (FLRW) universe. In this scenario, we consider the components of the dark sector as non-interact
Externí odkaz:
http://arxiv.org/abs/2312.14257
This article is devoted to the study of the thermodynamics phase transitions and critical phenomena of an FLRW cosmological model under the so-called Kaniadakis's statistics. The equation of state is derived from the corrected Friedmann field equatio
Externí odkaz:
http://arxiv.org/abs/2312.05683
For an FLRW model, thermodynamic phase transitions are investigated in the Einstein-Gauss-Bonnet gravity framework. Using the work density, the equation of state is derived, and the criticality conditions are employed to determine the critical points
Externí odkaz:
http://arxiv.org/abs/2311.14047
Autor:
Saavedra, Joel, Tello-Ortiz, Francisco
Employing the thermodynamic unified first law through the thermodynamic-gravity conjecture, in this article, we derive for a FLRW universe the Friedmann equations in the framework of Gauss-Bonnet gravity theory. To do this, we project this generalize
Externí odkaz:
http://arxiv.org/abs/2310.08781
In the present work, we perform a comparative study of different interacting dark energy (DE) models using the Statefinder diagnostics. In particular, 17 different forms of the energy transfer rate $Q$ between DE and dark matter (DM) were focused on,
Externí odkaz:
http://arxiv.org/abs/2310.04324
We studied the cosmological dynamics of a dilatonic ghost condensate field as a source of dark energy, which is non-minimally coupled to gravity through torsion. We performed a detailed phase-space analysis by finding all the critical points and thei
Externí odkaz:
http://arxiv.org/abs/2306.03386
Publikováno v:
Eur. Phys. J. Plus 138, 600 (2023)
We study the cosmological dynamics of dark energy in a scalar-vector-torsion theory. The vector field is described by the cosmic triad and the scalar field is of the quintessence type with non-minimal coupling to gravity. The coupling to gravity is i
Externí odkaz:
http://arxiv.org/abs/2212.12071
The anomalous decay rate of the quasinormal modes occurs when the longest-lived modes are the ones with higher angular number. Such behaviour has been recently studied in different static spacetimes, for uncharged scalar and fermionic perturbations,
Externí odkaz:
http://arxiv.org/abs/2204.01570
Publikováno v:
In Physics of the Dark Universe December 2024 46
We study the propagation of massless scalar fields non-minimally coupled to gravity in the background of five-dimensional Einstein-power-Maxwell black holes, and using the WKB and the pseudospectral Chebyshev methods we obtain the quasinormal frequen
Externí odkaz:
http://arxiv.org/abs/2112.04793