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On Superconnections and the Tachyon Effective Action
Mohsen Alishahiha, Harald Ita, Yaron Oz
We propose a form of the effective action of the tachyon and gauge fields for brane-antibrane systems and non-BPS Dp-branes, written in terms of the supercurvature. Kink and vortex…
Supergravity and "New" Six-Dimensional Gauge Theories
Mohsen Alishahiha, Yaron Oz
In the first part of this letter, we analyse the supergravity dual descriptions of six-dimensional field theories realized on the worldvolume of (p,q) five-branes (OD5 theory). We…
Supergravity and Light-Like Non-commutativity
Mohsen Alishahiha, Yaron Oz, Jorge G. Russo
We construct dual supergravity descriptions of field theories and little string theories with light-like non-commutativity. The field theories are realized on the world-volume of D…
Graviton Scattering on D6 Branes with B Fields
Mohsen Alishahiha, Harald Ita, Yaron Oz
We consider systems of D6 branes in the presence of a nonzero field of different ranks. We study the scattering of gravitons in the corresponding supergravity backgrounds. We s…
On Type II NS5-branes in the presence of an RR field
M. Alishahiha
In this letter we use Type II NS5-branes in the presence of an RR field at the decoupling limit to study a non-commutative version of little string theory. We shall see that the de…