Non-critical Non-singular Bosonic Strings, Linear Dilatons and Holography

TL;DR

This paper constructs non-critical bosonic string solutions with linear dilatons and B-fields, free of singularities, and explores their holographic duals to non-supersymmetric field theories, including stability considerations.

Contribution

It presents new non-critical string backgrounds with linear dilatons and B-fields, interpolating between flat space and AdS, with bounded coupling and holographic interpretations.

Findings

Solutions are free of space-time singularities.

String coupling remains bounded everywhere.

Holographic duals correspond to non-supersymmetric field theories.

Abstract

$AdS_{5}$ with linear dilaton and non vanishing $B$-field is shown to be a solution of the non critical string beta function equations. A non critical $(D=5)$ solution interpolating between flat space-time and $AdS_{5}$, with asymptotic linear dilaton and non vanishing $B$-field is also presented. This solution is free of space-time singularities and has got the string coupling constant everywhere bounded. Both solutions admit holographic interpretation in terms of ${\cal N}=0$ field theories. Closed string tachyon stability is also discussed.