%A Zeze,Syoji %D 2016 %J Frontiers in Physics %C %F %G English %K String Field Theory,D-branes,Matrix Model,string theory,Tachyon Condensation %Q %R 10.3389/fphy.2016.00039 %W %L %M %P %7 %8 2016-September-07 %9 Original Research %+ Syoji Zeze,Yokote Seiryo Gakuin High School,Yokote, Japan,ztaro21@gmail.com %# %! A matrix model from string field theory %* %< %T A Matrix Model from String Field Theory %U https://www.frontiersin.org/articles/10.3389/fphy.2016.00039 %V 4 %0 JOURNAL ARTICLE %@ 2296-424X %X 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.