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Supersymmetry and Membrane Interactions in M(atrix) Theory
Gilad Lifschytz, Samir D. Mathur
We calculate the potential between various configurations of membranes and gravitons in M(atrix) theory. The computed potentials agree with the short distance potentials between co…
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…
Universailty of Low Energy Absorption Cross-sections for Black Holes
Sumit R. Das, Gary Gibbons, Samir D. Mathur
In this paper we compute the low energy absorption cross-section for minimally coupled massles scalars and spin- particles, into a general spherically symmetric black hole in…
Interactions involving D-branes
Sumit R. Das, Samir D. Mathur
We investigate some aspects of the spectrum of D-branes and their interactions with closed strings. As argued earlier, a collection of many D-strings behaves, at large dilaton valu…
Comparing decay rates for black holes and D-branes
Sumit R. Das, Samir D. Mathur
We compute the leading order (in coupling) rate of emission of low energy quanta from a slightly nonextremal system of 1 and 5 D-branes. We also compute the classical cross-section…
Excitations of D-strings, Entropy and Duality
Sumit R. Das, Samir D. Mathur
We examine the BPS and low energy non-BPS excitations of the D-string, in terms of open strings that travel on the D-string. We use this to study the energy thresholds for exciting…