243 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Research Institute for Astronomy and Astrophysics of MaraghIR87 papers
- Shiraz UniversityIR23 papers
- University of KurdistanIR15 papers
- Institute for Research in Fundamental SciencesIR11 papers
- National University of Sciences and TechnologyPK11 papers
- GLA UniversityIN7 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT7 papers
- Joint Institute for Nuclear ResearchRU7 papers
- Yasouj UniversityIR7 papers
- Benha UniversityEG6 papers
- Ferdowsi University of MashhadIR6 papers
- Gran Sasso Science InstituteIT6 papers
21 papers · 1 filter
Birth of the GUP and its effect on the entropy of the Universe in Lie--algebra
Alireza Sepehri, Anirudh Pradhan, Richard Pincak +3
In this paper, the origin of the generalized uncertainty principle (GUP) in an -dimensional theory with Lie--algebra is considered. This theory which we name GLNA(Generalized…
The birth of the universe in a new G-Theory approach
Alireza Sepehri, Richard Pincak
Recently, Padmanabhan has discussed that the expansion of the cosmic space is due to the difference between the number of degrees of freedom on the boundary surface and the number…
Cosmology from quantum potential in a system of oscillating branes
Alireza Sepehri
Recently, some authors proposed a new mechanism which gets rid of the big-bang singularity and shows that the age of the universe is infinite. In this paper, we will confirm their…
Constructing warm inflationary model in finite temperature BIon
M. R. Setare, A. Sepehri
We study warm inflationary universe model on the BIon in thermal background. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a wormh…
Rotating black strings in -Maxwell theory
S. Salarpour, A. Sheykhi, Y. Bahrampour
In general, the field equations of theory coupled to a matter field are very complicated and hence it is not easy to find exact analytical solutions. However, if one conside…
Thermodynamics of Fractal Universe
Ahmad Sheykhi, Zeinab Teimoori, Bin Wang
We investigate the thermodynamical properties of the apparent horizon in a fractal universe. We find that one can always rewrite the Friedmann equation of the fractal universe in t…
Sounds of instability from generalized QCD ghost dark energy
Esmaeil Ebrahimi, Ahmad Sheykhi
We investigate about the stability of generalized QCD ghost dark energy model against perturbations in the FRW background. For this purpose, we use the squared sound speed …
Einstein Equations and MOND Theory from Debye Entropic Gravity
A. Sheykhi, K. Rezazadeh Sarab
Verlinde's proposal on the entropic origin of gravity is based strongly on the assumption that the equipartition law of energy holds on the holographic screen induced by the mass d…
Modified Friedmann Equations From Debye Entropic Gravity
A. Sheykhi, Z. Teimoori
A remarkable new idea on the origin of gravity was recently proposed by Verlinde who claimed that the laws of gravitation are no longer fundamental, but rather emerge naturally as…
Holographic Scalar Fields Models of Dark Energy
Ahmad Sheykhi
Many theoretical attempts toward reconstructing the potential and dynamics of the scalar fields have been done in the literature by establishing a connection between holographic/ag…
Power Law Entropy Corrected New-Agegraphic Dark Energy in Hořava-Lifshitz Cosmology
K. Karami, A. Sheykhi, Mubasher Jamil +3
We investigate the new agegraphic dark energy (NADE) model with power-law corrected entropy in the framework of Hořava-Lifshitz cosmology. For a non-flat universe containing the in…
Quintessence Ghost Dark Energy Model
Ahamd Sheykhi, Ali Bagheri
A so called "ghost dark energy" was recently proposed to explain the present acceleration of the universe expansion. The energy density of ghost dark energy, which originates from…
Viscous dark energy and generalized second law of thermodynamics
M. R. Setare, A. Sheykhi
We examine the validity of the generalized second law of thermodynamics in a non-flat universe in the presence of viscous dark energy. At first we assume that the universe filled o…
Thermodynamics of viscous dark energy in an RSII braneworld
M. R. Setare, A. Sheykhi
We show that for an RSII braneworld filled with interacting viscous dark energy and dark matter, one can always rewrite the Friedmann equation in the form of the first law of therm…
Power-Law Entropy Corrected Holographic Dark Energy Model
Ahmad Sheykhi, Mubasher Jamil
Among various scenarios to explain the acceleration of the universe expansion, the holographic dark energy (HDE) model has got a lot of enthusiasm recently. In the derivation of ho…
Holographic dark energy in Brans-Dicke cosmology with Granda-Oliveros cut-off
Mubasher Jamil, Kayoomars Karami, Ahmad Sheykhi +2
Motivated by the recent works of one of us [1,2] we study the holographic dark energy in Brans-Dicke gravity with the Granda-Oliveros cut-off proposed recently in literature. We fi…
Holographic dark energy in Brans-Dicke theory with log correction
Ahmad Sheykhi, Kayoomars Karami, Mubasher Jamil +2
In the derivation of holographic dark energy density, the area law of the black hole entropy plays a crucial role. However, the entropy-area relation can be modified from the inclu…
Restoring New Agegraphic Dark Energy in RS II Braneworld
Mubasher Jamil, Kayoomars Karami, Ahmad Sheykhi
Motivated by recent works [1,2], we investigate new agegraphic model of dark energy in the framework of RS II braneworld. We also include the case of variable gravitational constan…
Interacting entropy-corrected agegraphic-tachyon dark energy
Mubasher Jamil, Ahmad Sheykhi
Motivated by recent work of one of us [1], we generalize this work to agegraphic tachyon models of dark energy with entropy correction terms arising from loop quantum gravity. We e…
Thermodynamics of interacting entropy-corrected holographic dark energy in a non-flat FRW universe
Mubasher Jamil, Ahmad Sheykhi, M. Umar Farooq
A so-called "entropy-corrected holographic dark energy" (ECHDE), was recently proposed to explain the dark energy-dominated universe with the help of quantum corrections to the ent…
Interacting new agegraphic viscous dark energy with varying
A. Sheykhi, M. R. Setare
We consider the new agegraphic model of dark energy with a varying gravitational constant, , in a non-flat universe. We obtain the equation of state and the deceleration paramet…