Modular Invariance and One-Loop Finiteness of Five-Point Amplitudes in Type-II and Heterotic String Theories

16 June 1986

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 56 (24) , 2575-2577
https://doi.org/10.1103/physrevlett.56.2575

Abstract

We prove the modular invariance and thus the finiteness of the five-point amplitudes in closed superstrings. The complicated algebra necessary is considerably simplified by making use of the results of Frampton, Moxhay, and Ng for the open superstring.

Keywords

INVARIANCE
MAKING USE
HETEROTIC STRING
STRING THEORIES
ALGEBRA NECESSARY
OPEN SUPERSTRING
COMPLICATED ALGEBRA
LOOP FINITENESS
CLOSED SUPERSTRINGS

This publication has 5 references indexed in Scilit:

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Nuclear Physics B, 1986
One-Loop Finiteness in O(32) Open-Superstring Theory
Physical Review Letters, 1985
Heterotic string theory (I). The free heterotic string
Nuclear Physics B, 1985
Infinity cancellations in SO(32) superstring theory
Physics Letters B, 1985
Superstring theory
Physics Reports, 1982