Semiclassical Strings, Dipole Deformations of N=1 SYM and Decoupling of KK Modes

TL;DR

This paper studies semiclassical string configurations in a gamma-deformed Maldacena-Nunez background, providing evidence for improved decoupling of Kaluza-Klein modes and identifying limits where string energies reflect pure gauge theory effects.

Contribution

It analyzes the effects of gamma-deformation on string energies and KK mode decoupling, offering new insights into the dual dipole-deformed N=1 SYM theory.

Findings

String energies are higher in the deformed background compared to the undeformed one.

A limit exists where string energy becomes independent of gamma, indicating pure gauge theory effects.

Evidence suggests better decoupling of KK modes in the gamma-deformed background.

Abstract

In this paper we investigate the recently found $\gamma$-deformed Maldacena-Nunez background by studying the behavior of different semiclassical string configurations. This background is conjectured to be dual to dipole deformations of $\N=1$ SYM. We compare our results to those in the pure Maldacena-Nunez background and show that the energies of our string configurations are higher than in the undeformed background. Thinking in the lines of (hep-th/0505100) we argue that this is an evidence for better decoupling of the Kaluza-Klein modes from the pure SYM theory excitations. Moreover we are able to find a limit of the background in which the string energy is independent of $\gamma$, these strings are interpreted as corresponding to pure gauge theory effects.