Authors: Umut Gürsoy Erik Plauschinn Henk Stoof Stefan Vandoren
Publish Date: 2012/05/07
Volume: 2012, Issue: 5, Pages: 18-
Abstract
We study correlation functions of elementary fermions in strongly interacting field theories using the AdS/CFT correspondence This correspondence generically associates bulk fields to composite operators in field theory We modify the holographic prescription in order to obtain correlators that correspond to fermonic singleparticle excitations by introducing a dynamical fermionic source localized on a UV brane in a holographic background We work out the conditions when these correlators obey the zeroth frequency sumrule satisfied by angleresolved photoemission spectroscopy ARPES and are thus directly relevant to the AdS/CMT correspondence To illustrate our techniques we study field theories at zero chemical potential with an arbitrary dynamical exponent z ie the Lifshitz invariant conformal field theories including the usual relativistic case z = 1This article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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