Semiclassical String Solutions on deformed NS5-brane Backgrounds and New Plane wave

TL;DR

This paper investigates various Penrose limits of NS5-brane supergravity solutions with RR fields, revealing new plane wave backgrounds that help identify dual subsectors of LST/deformed LST via string theory analysis.

Contribution

It introduces novel plane wave solutions arising from NS5-brane backgrounds with RR fields and explores their implications for string theory dualities.

Findings

Discovery of 4D and 3D plane waves from NS5-brane with RR fields

Identification of dual subsectors of LST/deformed LST

Analysis of string solutions at one loop approximation

Abstract

We study different Penrose limits of supergravity solution of NS5-brane in the presence of RR field. Although in the case of NS5-brane we get a 4-dimensional plane wave, in the case with RR field we will get two different plane waves; a 4-dimensional and a 3-dimensional one. These plane wave solutions are the backgrounds that a particular string solution feels at one loop approximation. Using the one loop correction one can identify a particular subsector of LST/deformed LST which is dual to type II string theories on these plane waves.