Speaker
Jan Manschot
Description
I will discuss one-loop amplitudes in string theory, and in particular their analytic continuation based on a string theoretic analog of the i-epsilon prescription of quantum field theory. For various zero- and two-point one-loop amplitudes of both open and closed strings, I will explain that this analytic continuation is equivalent to a regularization using generalized exponential integrals. Our approach provides exact expressions in terms of the degeneracies at each mass level. Based on joint work with Zhi-Zhen Wang.
