48 citations · 73 across the 3 of their papers we have counts for
9 papers
Gravitational Approach to Tachyon Matter
Kazutoshi Ohta, Takashi Yokono
We found a gravity solution of p+1 dimensional extended object with SO(p)xSO(9-p) symmetry which has zero pressure and zero dilaton charge. We expect that this object is a residual…
Comments on orientifold projection in the conifold and SO x USp duality cascade
Shin'ichi Imai, Takashi Yokono
We study the O3-plane in the conifold. On the D3-brane world-volume we obtain SO x USp gauge theory that exhibits a duality cascade phenomenon. The orientifold projection is determ…
Linear Dilaton Background and Fully Localized Intersecting Five-branes
Kazutoshi Ohta, Takashi Yokono
We investigate a near-horizon geometry of NS5-branes wrapping on a Riemann surface, which asymptotically approaches to linear dilaton backgrounds. We concretely find a fully locali…
Deformation of Conifold and Intersecting Branes
Kazutoshi Ohta, Takashi Yokono
We study the relation between intersecting NS5-branes whose intersection is smoothed out and the deformed conifold in terms of the supergravity solution. We solve the condition of…
String creation in D6-brane background
Toshihiro Matsuo, Takashi Yokono
The production of string charge during a crossing of certain oriented D-branes is studied. We compute the string charge in the system of a probe D2-brane and a background D6-brane…
Orientifold 4-plane in brane configurations and N=4 USp(2Nc) and SO(Nc) theory
Takashi Yokono
We consider brane configurations in elliptic models which represent softly broken N=4 USp(2 N_c) and SO(N_c) theory. We generalize the notion of the O4 plane, so that it is compati…