Little Theories in Six and Seven Dimensions

Details Little Theories in Six and Seven Dimensions Little Theories in Six and Seven Dimensions

1997-10-02

arxiv.org/abs/hep-th/9710027v2

Nucl.Phys. B517 (1998) 205-226

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, LaTeX, no figures; references added

Scientific paper

10.1016/S0550-3213(98)00095-9

We discuss theories with 16 and 8 supercharges in 6 and 7 dimensions. These theories are defined as world-volume theories of 5- and 6-branes of type II and M theories, in the limit in which bulk modes decouple. We analyze in detail the spectrum of BPS extended objects of these theories, and show that the 6 dimensional ones can be interpreted as little (non-critical) string theories. The little 5-branes of the 6 dimensional theories with 16 supercharges are used to find new string theories with 8 supercharges, which have additional group structure. We describe the web of dualities relating all these theories. We show that the theories with 16 supercharges can be used for a Matrix description of M-theory on T^6 in the general case, and that they also reproduce Matrix theory on T^5 and T^4 in some particular limit.

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