Non-critical non-singular bosonic strings, linear dilatons and holography

Abstract AdS 5 with linear dilaton and nonvanishing B -field is shown to be a solution of the noncritical string beta function equations. A noncritical ( D =5) solution interpolating between flat spacetime and AdS 5 , with asymptotic linear dilaton and nonvanishing B -field is also presented. This solution is free of spacetime singularities and has got the string coupling constant everywhere bounded. Both solutions admit holographic interpretation in terms of N =0 field theories. Closed string tachyon stability is also discussed.