6 citations · 14 across the 3 of their papers we have counts for
3 papers
hep-th1992★ 6 cited
Cocycle Properties of String Theories on Orbifolds
Tsutomu Horiguchi, Makoto Sakamoto, Masayoshi Tabuse
We study cocycle properties of vertex operators and present an operator representation of cocycle operators, which are attached to vertex operators to ensure the duality of amplitu…
hep-th1992★ 3 cited
The General Class of String Theories on Orbifolds
Makoto Sakamoto, Masayoshi Tabuse
We investigate the following three consistency conditions for constructing string theories on orbifolds: i) the invariance of the energy-momentum tensors under twist operators, ii)…
hep-th1992★ 5 cited
String Theories on the Asymmetric Orbifolds with Twist-Untwist Intertwining Currents
Y. Imamura, M. Sakamoto, T. Sasada +1
We give various examples of asymmetric orbifold models to possess intertwining currents which convert untwisted string states to twisted ones, and vice versa, and see that such asy…