paper

Lifshitz metric with hyperscaling violation from NS5-Dp states in string theory

arXiv:1209.1049 · doi:10.1016/j.physletb.2013.02.039

Abstract

In our previous papers we have shown how Lifshitz-like space-time (space-time having a Lifshitz scaling along with a hyperscaling violation) can arise by taking near horizon limits of certain intersecting solutions (F-string with D-branes and also with two D-branes) of string theory. In this paper we construct intersecting bound state solutions in the form of NS5-D-branes (with ) of type II string theories. These are 1/4 BPS and threshold bound states unlike the known NS5-D bound states which are 1/2 BPS and non-threshold. We show that the near horizon limits of these solutions also lead to Lifshitz-like space-time with the dynamical scaling exponent and the hyperscaling violation exponent . The spatial dimension of the boundary theory is . The dilatons in these theories are not constant in general (except for ) and therefore produce RG flows. So, we also consider the strong coupling phases of these theories and find that these phases also have similar Lifshitz-like structures, except for , where it has an AdS structure.

12 pages, no figure; v2: Added references; v3: more clarifications added, version to appear in Phys. Lett. B

References in corpus (6)

Cited by in corpus (21)