A Matrix model from string field theory

Abstract

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 a $U(N)$ vector which are responsible for the D-brane at the tachyon vacuum. Effective potential for the scalar is evaluated both in finite and large $N$. Increase of potential height is observed in both examples. The large $N$ matrix integral is identified with a system of $N$ ZZ branes and a ghost FZZT brane.

16 pages, 4 figures, section 3 improved for publication

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Cited by in corpus (1)

• Witten's Cubic Open String Field Theory on multiple $Dp$-branes