36 citations · 102 across the 10 of their papers we have counts for
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Twisted boundary states and representation of generalized fusion algebra
Hiroshi Ishikawa, Taro Tani
The mutual consistency of boundary conditions twisted by an automorphism group G of the chiral algebra is studied for general modular invariants of rational conformal field theorie…
Twisted boundary states in Kazama-Suzuki models
Hiroshi Ishikawa, Taro Tani
We construct Cardy states in the Kazama-Suzuki model G/H x U(1), which satisfy the boundary condition twisted by the automorphisms of the coset theory. We classify all the automorp…
Twisted boundary states in c=1 coset conformal field theories
Hiroshi Ishikawa, Atsushi Yamaguchi
We study the mutual consistency of twisted boundary conditions in the coset conformal field theory G/H. We calculate the overlap of the twisted boundary states of G/H with the untw…
Novel construction of boundary states in coset conformal field theories
Hiroshi Ishikawa, Taro Tani
We develop a systematic method to solve the Cardy condition for the coset conformal field theory G/H. The problem is equivalent to finding a non-negative integer valued matrix repr…
Boundary states in coset conformal field theories
Hiroshi Ishikawa
We construct various boundary states in the coset conformal field theory G/H. The G/H theory admits the twisted boundary condition if the G theory has an outer automorphism of the…
Free Field Realization of D-brane in Group Manifold
Hiroshi Ishikawa, Satoshi Watamura
We construct the boundary state for the D-brane in the SU(2) group manifold directly in terms of the group variables. We propose a matching condition for the left- and the right-mo…
On the equivalence of fermionic string to bosonic string in two dimensions
Hiroshi Ishikawa
Two-dimensional fermionic string theory is shown to have a structure of topological model, which is isomorphic to a tensor product of two topological ghost systems independent of e…
Topological Structure in Fermionic String Theory
Shinji Hirano, Hiroshi Ishikawa
$\chat=1$ fermionic string theory, which is considered as a fermionic string theory in two dimension, is shown to decompose into two mutually independent parts, one of which can be…
Non-linear Structures in Non-critical NSR String
Ken-ji Hamada, Hiroshi Ishikawa
We investigate the Ward identities of the $\W_{\infty}$ symmetry in the super-Liouville theory coupled to the super-conformal matter of central charge …
Equivalence of BRST cohomologies for 2-d black hole and c=1 Liouville theory
Hiroshi Ishikawa, Mitsuhiro Kato
We study the relation between the black hole and the Liouville theory. A deformation, which interpolates the BRST operators of both models, is explicitly const…