Wilsonian effective action of superstring theory
Abstract
By integrating out the heavy fields in type II or heterotic string field theory one can construct the effective action for the light fields. This effective theory inherits all the algebraic structures of the parent theory and the effective action automatically satisfies the BatalinVilkovisky quantum master equation. This theory is manifestly ultraviolet finite, has only light fields as its explicit degrees of freedom, and the Feynman diagrams of this theory reproduce the exact scattering amplitudes of light states in string theory to any arbitrary order in perturbation theory. Furthermore in this theory the degrees of freedom of light fields above certain energy scale are also implicitly integrated out. This energy scale is determined by a particular parameter labelling a family of equivalent actions, and can be made arbitrarily low, leading to the interpretation of the effective action as the Wilsonian effective action.
 Publication:

Journal of High Energy Physics
 Pub Date:
 January 2017
 DOI:
 10.1007/JHEP01(2017)108
 arXiv:
 arXiv:1609.00459
 Bibcode:
 2017JHEP...01..108S
 Keywords:

 String Field Theory;
 Superstrings and Heterotic Strings;
 High Energy Physics  Theory
 EPrint:
 LaTeX, 26 pages