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4 papers · 1 filter
A Renormalized perturbation theory for problems with nontrivial boundary conditions or backgrounds in two space-time dimensions
Reza Moazzemi, Abdollah Mohammadi, Siamak S. Gousheh
In this paper we discuss the effects of nontrivial boundary conditions or backgrounds, including non-perturbative ones, on the renormalization program for systems in two dimensions…
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.…
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…
Conformal Invariance, Anomalous Gravitational Coupling and Derivation of a Particle Concept
Hadi Salehi, Yousef Bisabr
We study a gravitational model whose vacuum sector is invariant under conformal transformations. In this model we investigate the anomalous gravitational coupling of the large-scal…