Dark energy beyond quintessence: constraints from the swampland
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep06(2019)070
Abstract: A bstractThe string theory swampland proposes that there is no UV-completion for an effective field theory with an exact (metastable) de Sitter vacua, thereby ruling out standard ΛCDM cosmology if the conjecture is taken seriously.… read more here.
Keywords: energy beyond; quintessence; dark energy; energy ... See more keywords
Class of Exact Solutions for a Cosmological Model of Unified Gravitational and Quintessence Fields
Sign Up to like & getrecommendations! Published in 2017 at "Foundations of Physics"
DOI: 10.1007/s10701-017-0091-6
Abstract: A new approach to tackle Einstein equations for an isotropic and homogeneous Friedmann–Robertson–Walker Universe in the presence of a quintessence scalar field is devised. It provides a way to get a simple exact solution to… read more here.
Keywords: class exact; quintessence; solution; cosmological model ... See more keywords
Thermodynamics and Phase Transition from Regular Bardeen Black Hole Surrounded by Quintessence
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-018-3784-5
Abstract: In this paper, thermodynamics and phase transition are investigated for the regular Bardeen black hole surrounded by quintessence. Considering the metric of the Bardeen spacetime surrounded by quintessence, we derived the Unruh-Verlinde temperature. Using the… read more here.
Keywords: thermodynamics; phase transition; black hole; quintessence ... See more keywords
Black string surrounded by a static anisotropic quintessence fluid
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Physics"
DOI: 10.1016/j.aop.2019.168024
Abstract: Abstract A black string is a solution of the four-dimensional general relativity in cylindrical symmetric anti-de Sitter (AdS) spacetime pioneered by Lemos (1999). We obtain an exact rotating black string surrounded by quintessence matter in… read more here.
Keywords: surrounded static; black string; background; string surrounded ... See more keywords
Solution of Dirac equation and greybody radiation around a regular Bardeen black hole surrounded by quintessence
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Physics"
DOI: 10.1016/j.aop.2019.168026
Abstract: Abstract The exact solutions of the Dirac equation that describe a massive, non-charged particle with spin − 1 2 in the curved spacetime geometry of regular Bardeen black hole surrounded by quintessence (BBHSQ) are investigated.… read more here.
Keywords: bardeen black; black hole; quintessence; regular bardeen ... See more keywords
Thermodynamics of quantum-corrected Schwarzschild black hole surrounded by quintessence
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2019.01.009
Abstract: Abstract Considering a quantum correction due to vacuum fluctuation in the Schwarzschild space–time with quintessence, the thermodynamic properties such as mass, temperature, heat capacity–as functions of entropy, are studied. Also the equation of state of… read more here.
Keywords: schwarzschild black; black hole; quantum corrected; quintessence ... See more keywords
Impact of inhomogeneities on slowly rolling quintessence: implications for the local variations of the fine-structure constant
Sign Up to like & getrecommendations! Published in 2021 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac1870
Abstract: We study how the evolution of a dark energy quintessence fluid is modified by the presence of a matter inhomogeneity. To do so, we study linear perturbations of a flat FLRW background containing dust and… read more here.
Keywords: quintessence; slowly rolling; fine structure; structure constant ... See more keywords
Thermodynamics of a rotating and non-linear magnetic-charged black hole in the quintessence field
Sign Up to like & getrecommendations! Published in 2019 at "Physica Scripta"
DOI: 10.1088/1402-4896/ac0563
Abstract: We purpose an approach for the thermodynamic analysis of a rotating and non-linear magnetic-charged black hole with quintessence. Accordingly, we compute various thermodynamic quantities of the black hole, such as mass, temperature, potential provided from… read more here.
Keywords: linear magnetic; thermodynamics; black hole; non linear ... See more keywords
The Reissner-Nordström black hole surrounded by quintessence may not be destroyed
Sign Up to like & getrecommendations! Published in 2023 at "Chinese Physics B"
DOI: 10.1088/1674-1056/acd620
Abstract: In the study of weak cosmic censorship conjectures(WCCC), some researches find that the Reissner-Nordström(RN) black hole might cloud be destroyed by a test particle with special mass and charge under some conditions, which means that… read more here.
Keywords: quintessence; hole; black hole; hole surrounded ... See more keywords
Phase structures and transitions of quintessence surrounding RN black holes in a grand canonical ensemble *
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics C"
DOI: 10.1088/1674-1137/abf6c4
Abstract: Abstract Considering a grand canonical ensemble, we study the phase structures and transitions of RN black holes surrounded by quintessence dark energy on two different boundary conditions, namely AdS space and a Dirichlet wall. For… read more here.
Keywords: phase; space; phase structures; grand canonical ... See more keywords
Bending of light in a universe filled with quintessential dark energy
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.104041
Abstract: As a local effect of dynamical dark energy, bending of light in the presence of a spherically symmetric and static black hole surrounded by quintessence has been studied. Having in mind recent observational data, we… read more here.
Keywords: energy bending; quintessence; dark energy; energy ... See more keywords