43 citations · 120 across the 12 of their papers we have counts for
12 papers
Multiloop Amplitudes from Bosonic String Theory
Kaj Roland, Haru-Tada Sato
We show how the multiloop amplitudes of theory (in the worldline formulation of Schmidt and Schubert) are recovered from the N-tachyon -loop amplitude in bosonic strin…
Scattering Amplitudes and the CPT theorem in String Theory
A. Pasquinucci, K. Roland
We discuss the role of the CPT transformation in first quantized string theories, both on the world-sheet and in the space-time. We explicitly show that the space-time CPT theorem…
String Theory and the CPT Theorem on the World-Sheet
Andrea Pasquinucci, Kaj Roland
We study the CPT theorem for a two-dimensional conformal field theory on an arbitrary Riemann surface. On the sphere the theorem follows from the assumption that the correlation fu…
Multiloop World-Line Green Functions from String Theory
Kaj Roland, Haru-Tada Sato
We show how the multiloop bosonic Green function of closed string theory reduces to the world-line Green function as defined by Schmidt and Schubert in the limit where the string w…
CPT Invariance of String Models in a Minkowski Background
Andrea Pasquinucci, Kaj Roland
We study the space-time CPT properties of string theories formulated in a flat Minkowski background of even dimension. We define CPT as a world-sheet transformation acting on the v…
On the Normalization and Hermiticity of Amplitudes in 4D Heterotic Superstrings
A. Pasquinucci, K. Roland
We consider how to normalize the scattering amplitudes of 4D heterotic superstrings in a Minkowski background. We fix the normalization of the vacuum amplitude (the string partitio…