Regular S-Brane Backgrounds
G. Tasinato, I. Zavala, C.P. Burgess, F. Quevedo

TL;DR
This paper constructs smooth, time-dependent S-brane solutions in supergravity that avoid curvature singularities, generalizing earlier solutions through analytical continuation and duality symmetries across various dimensions.
Contribution
It introduces new non-singular S-brane backgrounds with reduced symmetry, extending solutions to higher dimensions and incorporating complex field configurations.
Findings
Constructed non-singular S-brane solutions in supergravity.
Generalized solutions to higher dimensions with scalars and gauge fields.
Analyzed global structure and properties of these backgrounds.
Abstract
We construct time-dependent S-brane solutions to the supergravity field equations in various dimensions which (unlike most such geometries) do not contain curvature singularities. The configurations we consider are less symmetric than are earlier solutions, with our simplest solution being obtained by a simple analytical continuation of the Kerr geometry. We discuss in detail the global structure and properties of this background. We then generalize it to higher dimensions and to include more complicated field configurations - like non vanishing scalars and antisymmetric tensor gauge potentials - by the usual artifice of applying duality symmetries.
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