Fermion propagators in QED3 with velocity anisotropies.pdf

arXiv:hep-lat/0509038v2 22 Sep 2005 PoS(LAT2005)249 Fermion propagators in QED 3with velocity anisotropies Iorwerth Owain Thomas ? University of Wales Swansea E-mail:******@ Simon Hands University of Wales Swansea E-mail:s.******@ QED 3with fermi and gap anisotropies is considered to be a candidate effective ?eld theory of high temperature superconductors. Simulations of a variant of the theory have demonstrated that there is evidence consistent with a phase transition to a chirally restored phase as the velocity anisotropy increases, and that the correlation lengths of pions in spatial directions behave in a manner consistent with the anisotropy being a relevant parameter of the theory. We present the ?rst measurements of the fermion propagator in Landau gaugefor this theory and suggest that the structure of this theory is plex than previously thought. XXIIIrd International Symposiumon Lattice Field Theory 25-30 July 2005 Trinity College, Dublin, Ireland ?Speaker. cCopyright owned by the author(s) under the terms of the mons Attribution-mercial-ShareAlike Licence. / PoS(LAT2005)249 Fermion propagators in QED 3with velocity anisotropies Iorwerth Owain Thomas 1. Introduction QED 3has been the subject of recent interest in condensed matter theory as a candidate effec- tive theory of the underdoped phases of cuprate high-temperature sup