143 citations · 1k across the 36 of their papers we have counts for
36 papers
On the stability of self-accelerating Universe in modified gravity with dynamical torsion
V. Nikiforova
We consider the model of modified gravity with dynamical torsion. This model was previously found to have promising stability properties about various backgrounds. Here we study th…
Self-accelerating Universe in modified gravity with dynamical torsion
V. Nikiforova, S. Randjbar-Daemi, V. Rubakov
We consider a model belonging to the class of gravities with dynamical torsion. The model is free of ghosts and gradient instabilities about Minkowski and torsionless Einstein back…
Non linear Fierz-Pauli theory from torsion and bigravity
Cédric Deffayet, Seifallah Randjbar-Daemi
The non linear aspects of a recently proposed model of massive spin-2 particles with propagating torsion are studied. We obtain a nonlinear equation which reduces at linear order t…
Aspects of Brane Physics in 5 and 6 Dimensions
S. L. Parameswaran, S. Randjbar-Daemi, A. Salvio
We outline a general strategy to deal with perturbations in brane world models. We illustrate the method by studying simple 6D brane world compactifications. We introduce the backg…
Infrared Modified Gravity with Dynamical Torsion
V. Nikiforova, S. Randjbar-Daemi, V. Rubakov
We continue the recent study of the possibility of constructing a consistent infrared modification of gravity by treating the vierbein and connection as independent dynamical field…
General Perturbations for Braneworld Compactifications and the Six Dimensional Case
S. L. Parameswaran, S. Randjbar-Daemi, A. Salvio
Our main objective is to study how braneworld models of higher codimension differ from the 5D case and traditional Kaluza-Klein compactifications. We first derive the classical dyn…