D-branes and Creation of Strings

Abstract

We review two types of D-branes processes where open strings are created. In the first type, a closed string incident on a collection of D-branes 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 non-renormalization 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 D-branes. We show that this is possible whenever a p-brane 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.

13 pages, latex with espcrc2. Based on talks at Strings'97 and SUSY'97. References added

References in corpus (6)

• Type IIB Superstrings, BPS Monopoles, And Three-Dimensional Gauge Dynamics
• String Theory and Classical Absorption by Threebranes
• World Volume Approach to Absorption by Non-dilatonic Branes
• Creation of Fundamental Strings by Crossing D-branes
• Zero and One-dimensional Probes with N=8 Supersymmetry
• Black Hole Greybody Factors and Absorption of Scalars by Effective Strings

Cited by in corpus (3)

• QED and String Theory
• String creation in D6-brane background
• String Creation, D-branes and Effective Field Theory