String coupling and interactions in type IIB matrix model

Details String coupling and interactions in type IIB matrix model String coupling and interactions in type IIB matrix model

2008-12-18

arxiv.org/abs/0812.3460v2

Phys.Rev.D79:106002,2009

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 3 figures, minor revisions

Scientific paper

10.1103/PhysRevD.79.106002

We investigate the interactions of closed strings in IIB matrix model. The basic interaction of the closed superstring is realized by the recombination of two intersecting strings. Such interaction is investigated in IIB matrix model via two dimensional noncommutative gauge theory in the IR limit. By estimating the probability of the recombination, we identify the string coupling g_s in IIB matrix model. We confirm that our identification is consistent with matrix string theory.

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