326 citations · 2.3k across the 93 of their papers we have counts for
7 papers · 1 filter
Multi-Metric Gravity via Massive Gravity
Nima Khosravi, Nafiseh Rahmanpour, Hamid Reza Sepangi +1
A generalization to the theory of massive gravity is presented which includes three dynamical metrics. It is shown that at the linear level, the theory predicts a massless spin-2 f…
Asymptotically Lifshitz Brane-World Black Holes
Arash Ranjbar, Hamid Reza Sepangi, Shahab Shahidi
We study the gravity dual of a Lifshitz field theory in the context of a RSII brane-world scenario, taking into account the effects of the extra dimension through the contribution…
DGP brane cosmology and quark-hadron phase transition
K. Atazadeh, A. M. Ghezelbash, H. R. Sepangi
In the standard picture of cosmology it is predicted that a phase transition, associated with chiral symmetry breaking after the electroweak transition, has occurred at approximate…
Stabilization of Compactification Volume In a Noncommutative Mini-Super-Phase-Space
N. Khosravi, H. R. Sepangi, M. M. Sheikh-Jabbari
We consider a class of generalized FRW type metrics in the context of higher dimensional Einstein gravity in which the extra dimensions are allowed to have different scale factors.…
Non-commutative multi-dimensional cosmology
N. Khosravi, S. Jalalzadeh, H. R. Sepangi
A non-commutative multi-dimensional cosmological model is introduced and used to address the issues of compactification and stabilization of extra dimensions and the cosmological c…
Unification of Higgs and Maxwell fields in Brane-Kaluza-Klein gravity
S. Jalalzadeh, H. R. Sepangi
The unification of Higgs and electromagnetic fields in the context of higher dimensional gravity is studied. We show that these fields arise from an extra large dimension together…
Multi-dimensional classical and quantum cosmology: Exact solutions, signature transition and stabilization
S. Jalalzadeh, F. Ahmadi, H. R. Sepangi
We study the classical and quantum cosmology of a -dimensional spacetime minimally coupled to a scalar field and present exact solutions for the resulting field equations fo…