Dbranes and creation of strings
Abstract
We review two types of Dbranes processes where open strings are created. In the first type, a closed string incident on a collection of Dbranes is converted into a number of open strings running along them. For the case of threebranes we compare the leading absorption rate with that in semiclassical gravity, and find exact agreement. A supersymmetric nonrenormalization theorem guarantees that this agreement survives all corrections in powers of the string coupling times the number of branes. The second type of process is creation of stretched open strings by crossing Dbranes. We show that this is possible whenever a pbrane passes through an (8 p)brane positioned orthogonally to it. The extra attractive force exerted by the stretched open string is crucial for finding that the net force cancels in this BPS system.
 Publication:

Nuclear Physics B Proceedings Supplements
 Pub Date:
 November 1998
 DOI:
 10.1016/S09205632(98)001480
 arXiv:
 arXiv:hepth/9709160
 Bibcode:
 1998NuPhS..68..140K
 Keywords:

 High Energy Physics  Theory
 EPrint:
 13 pages, latex with espcrc2. Based on talks at Strings'97 and SUSY'97. References added