Excision of `repulson' singularities: a spacetime result and its gauge theory analogue

TL;DR

This paper explores how certain spacetime singularities, called 'repulson' singularities, can be resolved within the gravity/gauge correspondence framework, linking gravitational phenomena to gauge theory analogues.

Contribution

It provides a spacetime-based resolution to 'repulson' singularities and draws parallels with gauge theory counterparts, enhancing understanding of singularity resolution in string theory.

Findings

Repulson singularities can be excised through specific spacetime modifications.

The resolution has a gauge theory analogue, supporting the gauge/gravity duality.

The work clarifies singularity resolution mechanisms in brane systems with eight supercharges.

Abstract

We discuss spacetime singularity resolution in the context of the gravity/gauge correspondence, for brane systems which give rise to gauge theories with eight supercharges and no hypermultiplets. The discussion is aimed at non-experts. Writeup of talk on hep-th/9911161 with C.V.Johnson and J.Polchinski, given in various forms at: PASCOS-99, Aspen winter conference `Way Beyond the Standard Models', Banff CIAR Gravity+Cosmology Programme Meeting.