We investigate the NBI matrix model with the potential XΛ+X−1+(2η+1)logX recently proposed to describe IIB superstrings. With the proper normalization, using Virasoro constraints, we prove the equivalence of this model and the Kontsevich matrix model for η=0 and find the explicit transformation between the two models.
Cite
@article{arxiv.hep-th/9805212,
title = {The NBI matrix model of IIB Superstrings},
author = {J. Ambjørn and L. Chekhov},
journal= {arXiv preprint arXiv:hep-th/9805212},
year = {2014}
}