A Comment on the Stability of String Monopoles

TL;DR

This paper discusses the stability of string monopoles in heterotic string theory, highlighting their potential as unique solitonic solutions that could distinguish string theory from other gauge and gravity theories.

Contribution

It introduces stable multimonopole solutions in heterotic string theory, contrasting their stability with solutions in Einstein-Maxwell or Yang-Mills-dilaton theories.

Findings

String monopoles in heterotic theory are stable.

Stable solitonic solutions may serve as tests for low-energy string theory.

Contrast with instability in analogous solutions of other theories.

Abstract

In recent work a multimonopole solution of heterotic string theory was obtained. The monopoles are noted to be stable, in contrast with analogous solutions of Einstein-Maxwell or Yang-Mills-dilaton theory. The existence of this and other classes of stable solitonic solutions in string theory thus provides a possible test for low-energy string theory as distinct from other gauge + gravity theories.