Semiclassical Strings Probing NS5 Brane Wrapped on S^5

TL;DR

This paper investigates the properties of little string theory on R^1 x S^5 via supergravity duals, analyzing semiclassical strings and solvable plane wave limits to understand non-perturbative aspects of NS5 branes.

Contribution

It provides a detailed analysis of semiclassical string solutions and plane wave limits in the context of NS5 branes wrapped on S^5, offering new insights into the duality and string dynamics.

Findings

Semiclassical rotating strings exhibit specific energy-spin relations.

Plane wave limit yields exactly solvable string theory models.

Insights into the non-perturbative regime of little string theory.

Abstract

We study little string theory on R^1 x S^5, defined by a theory which lives on type IIA N NS5 branes wrapped on S^5, using its supergravity dual. In particular we study semiclassical rotating closed strings in this background. We also consider Penrose limit of this background that leads to a plane wave on which string theory is exactly solvable.