Regular non-twisting S-branes

TL;DR

This paper introduces a new family of regular, non-singular S-brane solutions derived from a known vacuum spacetime, which are asymptotically flat and resemble the Kerr S-brane without requiring space twist.

Contribution

It presents the first regular, non-singular S-brane solutions that are time and angular dependent, extending previous singular models and including charged and dilatonic generalizations.

Findings

Solutions are free of singularities and asymptotically flat.

Resemble the Kerr S-brane in asymptotic properties.

Include charged and dilatonic extensions.

Abstract

We construct a family of time and angular dependent, regular S-brane solutions which corresponds to a simple analytical continuation of the Zipoy-Voorhees 4-dimensional vacuum spacetime. The solutions are asymptotically flat and turn out to be free of singularities without requiring a twist in space. They can be considered as the simplest non-singular generalization of the singular S0-brane solution. We analyze the properties of a representative of this family of solutions and show that it resembles to some extent the asymptotic properties of the regular Kerr S-brane. The R-symmetry corresponds, however, to the general Lorentzian symmetry. Several generalizations of this regular solution are derived which include a charged S-brane and an additional dilatonic field.