Department of Physics Papers

Document Type

Journal Article

Date of this Version

2-1990

Publication Source

Nuclear Physics

Volume

332

Issue

1

Start Page

83

Last Page

130

DOI

10.1016/0550-3213(90)90031-8

Abstract

We show how to obtain loop-corrected effective field equations in tachyon-free heterotic string theories. The corrections are automatically gauge-invariant; they simultaneously secure Brst-decoupling and unambiguous loop amplitudes. We introduce a cutoff for two-dimensional field theory which is more general than the choice of a world-sheet metric, and using this we give an invariant description of factorization of fermionic amplitudes. As an example we work out the linearized corrections for the O(16) × O(16) heterotic string. They come from a finite corrected effective action.

Copyright/Permission Statement

©. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

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Date Posted: 01 May 2017

This document has been peer reviewed.