A Matrix Model from String Field Theory

[摘要] We demonstrate that a Hermitian matrix model can be derived from level truncated open string field theory with Chan-Paton factors. The Hermitian matrix is coupled with a scalar and U(N) vectors which are responsible for the D-brane at the tachyon vacuum. Effective potential for the scalar is evaluated both for finite and large N. Increase of potential height is observed in both cases. The large $N$ matrix integral is identified with a system of N ZZ branes and a ghost FZZT brane.

[学科分类] 物理（综合）

[关键词] String Field Theory;D-branes;Matrix Model;string theory;Tachyon Condensation