26 citations · 66 across the 8 of their papers we have counts for
8 papers
Time dependent supergravity solutions in arbitrary dimensions
Somdatta Bhattacharya, Shibaji Roy
By directly solving the equations of motion we obtain the time dependent solutions of supergravities with dilaton and a -form field-strength in arbitrary dimensions. The metrics…
On the effective action of a space-like brane
Somdatta Bhattacharya, Sudipta Mukherji, Shibaji Roy
Starting from the non-BPS D-brane action we derive an effective action in space dimensions by studying the fluctuations of various bosonic fields around the time-lik…
More on Penrose limits and non-local theories
Somdatta Bhattacharya, S. Roy
We obtain the Penrose limit of six dimensional Non-Commutative Open String (NCOS) theory and show that in the neighborhood of a particular null geodesic it leads to an exactly…
Penrose limit and NCYM theories in diverse dimensions
Somdatta Bhattacharya, S. Roy
We obtain the Penrose limit of NCYM theories in dimensions which originate from (D, D) supergravity bound state configurations for in…
A Short Note On The Wilson-Loop Average And The AdS/CFT Correspondece
Somdatta Bhattacharya
In hep-th/9803002, Maldacena argued that in the light of the AdS/CFT correspondence as formulated by Witten and Gubser, Klebanov and Polyakov as a relation between partition functi…
Correlators of open D-string theory from supergravity
Somdatta Bhattacharya, Shibaji Roy
We consider a minimally coupled massless scalar propagating in the background of NS5-branes in the presence of a 2-form RR electric field. The supergravity solution also called the…