1/N effects in nonrelativistic gaugegravity duality
Abstract
We argue that highercurvature terms in the gravitational Lagrangian lead, via nonrelativistic gaugegravity duality, to finite renormalization of the dynamical exponent of the dual conformal field theory. Our argument includes a proof of the nonrenormalization of the Schrödinger and Lifshitz metrics beyond rescalings of their parameters, directly generalizing the AdS case. We use this effect to construct stringtheory duals of nonrelativistic critical systems with noninteger dynamical exponents, then use these duals to predict the viscosity/entropy ratios of these systems. The predicted values weakly violate the KSS bound.
 Publication:

Journal of High Energy Physics
 Pub Date:
 March 2009
 DOI:
 10.1088/11266708/2009/03/097
 arXiv:
 arXiv:0812.0166
 Bibcode:
 2009JHEP...03..097A
 Keywords:

 High Energy Physics  Theory;
 Condensed Matter  Other Condensed Matter
 EPrint:
 26 pages, latex