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Theory Seminar
KEK 素粒子原子核研究所・理論セミナー
(ABSTRACT)
Minimal superstring theories are good toy models for investigating various aspects of string theory. They have fewer degrees of freedom but still share many features with their critical-string counterparts. One of the most important thing is that they can be completely described with some nonperturbative formulations. In this talk, we construct a closed superstring field theory of (p,q) minimal superstrings from 2-cut ansatz of two-matrix models, with the free fermion realization of 2-component KP hierarchy. The relationships between two-cut two matrix models, Liouville theory and the string field theory are discussed. We also show that a explicit solution of W_{1+\infty} constraints are obtained in the (p,q) = (2,4k) minimal superstrings and the system can be described with supermatrix model. We also want to discuss some other important topics in minimal superstring theories. (Refs. JHEP 0701:037,2007 [hep-th/0611045], JHEP 0703:101,2007 [hep-th/0701031])