76 citations · 700 across the 49 of their papers we have counts for
49 papers
Graviton vertex operators in the de Donder gauge and BRST descent
Isao Kishimoto, Tomohiko Takahashi, Mamiko Yamada
We revisit the role of the trace sector of the graviton in covariant string amplitudes by constructing the ghost-number-three graviton vertex operator via BRST descent, imposing on…
Vertex Operators in Superstring Theory from Integral Forms and Descent Equations
Isao Kishimoto, Shigenori Seki, Haruka Shimogaki +1
We develop a geometric formulation of vertex operators in superstring theory based on integral forms on super Riemann surfaces. Starting from the integrated NS-NS vertex operator,…
Two-point closed string amplitudes in the BRST formalism
Isao Kishimoto, Shigenori Seki, Tomohiko Takahashi
Two-point tree-level amplitudes in bosonic closed string theory are described by a correlation function within the BRST formalism, which respects manifest Lorentz and conformal inv…
Closed string vertex operators with various ghost number
Isao Kishimoto, Mako Kouga, Shigenori Seki +1
We construct closed string vertex operators with various ghost numbers in addition to the conventional ones, using the Faddeev-Popov procedure for the gauge fixing of the conformal…
The Veneziano Amplitude via Mostly BRST Exact Operator
Isao Kishimoto, Tomoko Sasaki, Shigenori Seki +1
The Veneziano amplitude is derived from fixing one degree of freedom of symmetry by the insertion of a mostly BRST exact operator. Evaluating the five-point fun…
Reduction of Open String Amplitudes by Mostly BRST Exact Operators
Shigenori Seki, Tomohiko Takahashi
We study two and three-point tree-level amplitudes of open strings. These amplitudes are reduced from higher-point correlation functions by using mostly BRST exact operators for ga…