75 citations · 104 across the 4 of their papers we have counts for
12 papers · 1 filter
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…
Non-Abelian Magnetized Blackholes and Unstable Attractors
A. E. Mosaffa, S. Randjbar-Daemi, M. M. Sheikh-Jabbari
Fluctuations of non-Abelian gauge fields in a background magnetic flux contain tachyonic modes and hence the background is unstable. We extend these results to the cases where the…
Gauge Fields, Fermions and Mass Gaps in 6D Brane Worlds
S. L. Parameswaran, S. Randjbar-Daemi, A. Salvio
We study fluctuations about axisymmetric warped brane solutions in 6D minimal gauged supergravity. Much of our analysis is general and could be applied to other scenarios. We focus…
On the Decoupling of Heavy Modes in Kaluza-Klein Theories
S. Randjbar-Daemi, A. Salvio, M. Shaposhnikov
In this paper we examine the 4-dimensional effective theory for the light Kaluza-Klein (KK) modes. Our main interest is in the interaction terms. We point out that the contribution…
A New Anomaly-Free Gauged Supergravity in Six Dimensions
Spyros D. Avramis, Alex Kehagias, S. Randjbar-Daemi
We present a new anomaly-free gauged N=1 supergravity model in six dimensions. The gauge group is E_7xG_2xU(1)_R, with all hyperinos transforming in the product representation {56,…
Nonsingular 4d-flat branes in six-dimensional supergravities
V. P. Nair, S. Randjbar-Daemi
We show that six-dimensional supergravity models admit nonsingular solutions in the presence of flat three-brane sources with positive tensions. The models studied in this paper ar…