Department of Physics Papers

Document Type

Journal Article

Date of this Version

1-1987

Publication Source

Nuclear Physics B

Volume

281

Issue

1

Start Page

127

Last Page

144

DOI

10.1016/0550-3213(87)90250-1

Abstract

We study n-string amplitudes with one or two strings off-shell using the Polyakov path integral. The residues of the poles of these amplitudes correspond to the correct S-matrix elements. The coupling of gravitons to off-shell amplitudes shows that objects invariant under all world-sheet symmetries are also invariant under spacetime gauge symmetries. We interpret our results in terms of a local operator expansion.

Comments

At the time of publication, author Philip C. Nelson was affiliated with Harvard University. Currently, he is a faculty member in the Physics & Astronomy Department at the University of Pennsylvania.

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Date Posted: 01 May 2017

This document has been peer reviewed.