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
48 papers · 1 filter
Quantum vacuum effects on the formation of black holes
Moslem Shafiee, Yousef Bahrampour
We study the backreaction of quantum fields induced through the vacuum polarization and the conformal anomaly on the collapse of a thin shell of dust. It is shown that the final fa…
Regular Black Holes: Entropy Products and Central Charges
Hanif Golchin
In this paper for variety types of regular black hole solutions, we investigate the entropy product of inner and outer horizons. Similar to singular black holes, for the regular on…
Central charges from Thermodynamics method in 3D gravity
Davood Mahdavian Yekta, Hanif Golchin
In the context of guage/gravity duality, we investigate the central charges of a number of 2-dimensional conformal field theories (CFTs) that might live on the boundary of some 3-d…
More on the Entropy Product and Dual CFTs
Hanif Golchin
In this paper, we check the universality of the entropy product for some black hole and black ring solutions. Applying the asymptotic symmetry group (ASG) analysis, we also find th…
Quarkonium in a thermal BIon
Alireza Sepehri, Richard Pincak, Michal Hnatič +2
In the present article, the authors intend to propose a new theory which potentially allows the propagation of the formation and the evolution of quarkonium in a thermal BIon. When…
Thermodynamics, phase transitions and Ruppeiner geometry for Einstein-dilaton Lifshitz black holes in the presence of Maxwell and Born-Infeld electrodynamics
M. Kord Zangeneh, A. Dehyadegari, M. R. Mehdizadeh +2
In this paper, we first obtain the ()-dimensional dilaton-Lifshitz black hole (BH) solutions in the presence of Born-Infeld (BI) electrodynamics. We find that there are two di…
The evolution of Brown-York quasilocal energy due to evolution of Lovelock gravity in a system of M0-branes
Alireza Sepehri, Farook Rahaman, Salvatore Capozziello +2
Recently, it has been suggested in [JHEP 12(2015)003] that the Brown-York mechanism can be used to measure the quasilocal energy in Lovelock gravity. We have used this method in a…
Emergence and expansion of cosmic space as due to M0-branes
Alireza Sepehri, Mohammad Reza Setare, Salvatore Capozziello
Recently, Padmanabhan [arXiv:1206.4916 [hep-th]] discussed that the difference between the number of degrees of freedom on the boundary surface and the number of degrees of freedom…
Holographic Cosmology from a System of M2-M5 Branes
Alireza Sepehri, Mir Faizal, Mohammad Reza Setare +1
In this paper, we analyze the holographic cosmology using a M2-M5 brane configuration. In this configuration, a M2-brane will be placed in between a M5-brane and an anti-M5-brane.…
Counterterms for Static Lovelock Solutions
M. R. Mehdizadeh, M. H. Dehghani, M. Kord Zangeneh
In this paper, we introduce the counterterms that remove the non-logarithmic divergences of the action in third order Lovelock gravity for static spacetimes. We do this by defining…
Does HM mechanism work in string theory?
Alireza Sepehri, Somayyeh Shoorvazi, Mohammad Ebrahim Zomorrodian
The correspondence principle offered a unique opportunity to test the Horowitz and Maldacena mechanism at correspondence point "the centre of mass energies around $(M_{s}/(g_{s})^{…
Instability of QCD ghost dark energy model
Esmaeil Ebrahimi, Ahmad Sheykhi
We investigate the instability of the ghost dark energy model against perturbations in different cases. To this goal we use the squared sound speed whose sign determines th…
Interacting Ghost Dark Energy in Brans-Dicke Theory
Esmaeil Ebrahimi, Ahmad Sheykhi
We investigate the QCD ghost model of dark energy in the framework of Brans-Dicke cosmology. First, we study the non-interacting ghost dark energy in a flat Brans-Dicke theory. In…
Tachyon Reconstruction of Ghost Dark Energy
A. Sheykhi, M. Sadegh Movahed, E. Ebrahimi
Recently it has been argued that a possible source for the dark energy may arise due to the contribution to the vacuum energy of the QCD ghost in a time-dependent background. In th…
Interacting Ghost Dark Energy in Non-Flat Universe
A. Sheykhi, M. Sadegh Movahed
A new dark energy model called "ghost dark energy" was recently suggested to explain the observed accelerating expansion of the universe. This model originates from the Veneziano g…
Thermodynamics of apparent horizon and modified Friedman equations
Ahmad Sheykhi
Starting from the first law of thermodynamics, , at apparent horizon of a FRW universe, and assuming that the associated entropy with apparent horizon has a quantum…
Entropic Corrections to Einstein Equations
S. H. Hendi, A. Sheykhi
Considering the general quantum corrections to the area law of black hole entropy and adopting the viewpoint that gravity interprets as an entropic force, we derive the modified fo…
Scalar Field Reconstruction of Power-Law Entropy-Corrected HDE
Esmaeil Ebrahimi, Ahmad Sheykhi
A so called "power-law entropy-corrected holographic dark energy" (PLECHDE) was recently proposed to explain the dark energy dominated universe. This model is based on the power-la…
Power-Law Entropic Corrections to Newton's Law and Friedmann Equations
Ahmad Sheykhi, Seyed Hossein Hendi
A possible source of black hole entropy could be the entanglement of quantum fields in and out the horizon. The entanglement entropy of the ground state obeys the area law. However…
Interacting HDE and NADE in Brans-Dicke Chameleon Cosmology
Ahmad Sheykhi, Mubasher Jamil
Motivated by the recent work of one of us [1], we generalize this work to the case where the pressureless dark matter and the holographic dark energy do not conserve separately but…
Entropic Corrections to Coulomb's Law
S. H. Hendi, A. Sheykhi
Two well-known quantum corrections to the area law have been introduced in the literatures, namely, logarithmic and power-law corrections. Logarithmic corrections, arises from loop…
Interacting entropy-corrected new agegraphic dark energy in Brans-Dicke cosmology
Kayoomars Karami, Ahmad Sheykhi, Mubasher Jamil +2
Motivated by a recent work of one of us [1], we extend it by using quantum (or entropy) corrected new agegraphic dark energy in the Brans-Dicke cosmology. The correction terms are…
Agegraphic Chaplygin gas model of dark energy
Ahmad Sheykhi
We establish a connection between the agegraphic models of dark energy and Chaplygin gas energy density in non-flat universe. We reconstruct the potential of the agegraphic scalar…
Thermodynamics of higher dimensional topological charged AdS black branes in dilaton gravity
S. H. Hendi, A. Sheykhi, M. H. Dehghani
In this paper, we study topological AdS black branes of -dimensional Einstein-Maxwell-dilaton theory and investigate their properties. We use the area law, surface gravity a…