8 papers
Gravity on and flat connections in the boundary CFT
Samir D. Mathur
We consider the CFT that arises from the D1-D5 system in the presence of a constant background gauge potential which couples to the R-charge of the theory: this potential effective…
From Black Holes to Pomeron: Tensor Glueball and Pomeron Intercept at Strong Coupling
Richard C. Brower, Samir D. Mathur, Chung-I Tan
We briefly review the approach for strong coupling calculation of glueball masses based on the duality between supergravity and Yang-Mills theory. Earlier work is extended to non-z…
Absorption of partial waves by three-branes
Samir D. Mathur, Alec Matusis
We study the absorption of a class of fields in the geometry produced by extremal three-branes. We consider fields that do not mix with the ten-dimensional graviton. For these fiel…
Non-BPS excitations of D-branes and Black holes
Samir D. Mathur
This note discusses some results on the non-BPS excitations of D-branes. We show that the excitation spectrum of a bound state of D-strings changes character when the length of the…
Real Time Propagator in the First Quantised Formalism
Samir D. Mathur
We argue that a basic modification must be made to the first quantised formalism of string theory if the physics of `particle creation' is to be correctly described. The analogous…
Information Retrieval from a Charge `Trap'
Samir D. Mathur
We study the model of massless electrodynamics with nonconstant coupling, introduced by Peet, Susskind and Thorlacius as the `charge hole'. But we take the boundary of the st…