The nonperturbative aspects of string theory are explored for noncritical string in two distinct formulations: loop equations and matrix models. The effects corresponding to D-brane in these… (More)

We study the q-deformed su(2) spin network as a 3-dimensional quantum gravity model. We show that in the semiclassical continuum limit the Turaev-Viro invariant obtained recently defines naturally… (More)

We present a new fermionic solution of the supersymmetric matrix model. The solution satisfies the commutation and anticommutation relations for noncommutative superspace. Therefore the solution can… (More)

The known BPS dyon black hole solutions of the N = 4 heterotic string in four dimensions with a non-zero angular momentum all have naked singularities. We show that it is possible to modify a certain… (More)

We investigate the CGHS model through numerical calculation. The behavior of the mass function, which we introduced in our previous work as a “local mass”, is examined. We found that the mass… (More)

We construct a new extreme black hole solution in toroidally compactified heterotic string theory. The black hole saturates the Bogomol’nyi bound, has zero angular momentum, but nonzero electric… (More)

The X-ray structure analysis of 2,2'-spirobi(1,3-benzodithiole), C(13)H(8)S(4), has been performed. The molecule has crystallographic twofold rotation symmetry, the axis passing through the spiro-C… (More)

In the tetramethylarsonium salt of 2,5-dichloro-7,7,8,8-tetracyanoquinodimethanide [systematic name: tetramethylarsonium 2,2'-(2,5-dichlorocyclohexa-2,5-diene-1,4-diylidene)bis(propanedinitrile)],… (More)