Semiclassical quantization of Rotating Strings in Pilch-Warner geometry

TL;DR

This paper investigates semiclassical quantization of rotating strings in Pilch-Warner geometry, revealing how NS-NS fields influence quantum corrections to string energy spectra in less supersymmetric backgrounds.

Contribution

It extends semiclassical string analysis to Pilch-Warner geometry, showing the impact of NS-NS fields on quantum corrections in a less supersymmetric setting.

Findings

Classical energy and spin match those in $AdS_5\times S^5$.

NS-NS fields couple fluctuation modes, affecting quantum corrections.

Results compared with pp-wave limit analyses.

Abstract

Some of the recent important developments in understanding string/ gauge dualities are based on the idea of highly symmetric motion of ``string solitons'' in $AdS_5\times S^5$ geometry originally suggested by Gubser, Klebanov and Polyakov. In this paper we study symmetric motion of certain string configurations in so called Pilch-Warner geometry. The two-form field $A_2$ breaks down the supersymmetry to $\mathcal{N}=1$ but for the string configurations considered in this paper the classical values of the energy and the spin are the same as for string in $AdS\times S^5$. Although trivial at classical level, the presence of NS-NS antisymmetric field couples the fluctuation modes that indicates changes in the quantum corrections to the energy spectrum. We compare our results with those obtained in the case of pp-wave limit in hep-th/0206045.