Some Comments on QCD String

TL;DR

This paper discusses the characteristics that a string theory equivalent to higher-dimensional gauge theories should have, based on lessons from recent string representations of large N Yang-Mills theory, emphasizing continuous worldsheets, strong short-distance coupling, and negative weights.

Contribution

It highlights key features expected in a string theory that is exactly equivalent to higher-dimensional gauge theories, inspired by recent developments in large N Yang-Mills string representations.

Findings

Continuous worldsheets are essential.

Strong coupling at short distances is expected.

Negative weights are characteristic.

Abstract

We try to draw lessons for higher dimensions from the string representations recently derived for large $N$ Yang-Mills theory by Gross and Taylor, Kostov, and others, and call attention to three characteristics that should be expected of a string theory precisely equivalent to a higher dimensional gauge theory: continuous world-sheets; strong coupling at short distances; and negative weights. To appear in the proceedings of the Strings '93 Berkeley conference.