Unwinding strings and T-duality of Kaluza-Klein and H-Monopoles

TL;DR

This paper explores how string unwinding phenomena relate to T-duality between Kaluza-Klein monopoles and H-monopoles, revealing new zero modes and stringy corrections consistent with duality principles.

Contribution

It demonstrates the existence of zero modes for Kaluza-Klein monopoles and analyzes string unwinding and T-duality effects, highlighting stringy corrections to monopoles.

Findings

Identification of zero modes for Kaluza-Klein monopoles.

Description of T-dual unwinding processes involving H-monopoles.

Evidence of stringy corrections consistent with T-duality.

Abstract

A fundamental string with non-zero winding number can unwind in the presence of a Kaluza-Klein monopole. We use this fact to deduce the presence of a zero mode for the Kaluza-Klein monopole corresponding to excitations carrying H electric charge and we study the coupling of this zero mode to fundamental strings. We also a describe a T-dual process in which the momentum of a fundamental string ``unwinds'' in the presence of a H monopole. We use the coupling of string winding modes to the dyon collective coordinate of the Kaluza-Klein monopole to argue that there are stringy corrections to the Kaluza-Klein monopole which are in accordance with T-duality.