Chiral phase transitions and quantum critical points of the D3/D7(D5) system with mutually perpendicular E and B fields at finite temperature and density
Evans, Nick, Kim, Keun-Young and Shock, Jonathan P. (2011) Chiral phase transitions and quantum critical points of the D3/D7(D5) system with mutually perpendicular E and B fields at finite temperature and density. Journal of High Energy Physics, 2011, (9) (doi:10.1007/JHEP09(2011)021).
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We study chiral symmetry restoration with increasing temperature and density in gauge theories subject to mutually perpendicular electric and magnetic fields using holography. We determine the chiral symmetry breaking phase structure of the D3/D7 and D3/D5 systems in the temperature-density-electric field directions. A magnetic field may break the chiral symmetry and an additional electric field induces Ohm and Hall currents as well as restoring the chiral symmetry. At zero temperature the D3/D5 system displays a line of holographic BKT phase transitions in the density-electric field plane, while the D3/D7 system shows a mean-field phase transition. At intermediate temperatures, the transitions in the density-electric field plane are of first order at low density, transforming to second order at critical points as density rises. At high temperature the transition is only ever first order.
|Keywords:||AdS-CFT correspondence, holography and condensed matter physics (AdS/CMT|
|Subjects:||Q Science > QC Physics|
|Divisions:||Faculty of Physical Sciences and Engineering > Physics and Astronomy > Theoretical Partical Physics Group
|Date Deposited:||24 Apr 2012 11:07|
|Last Modified:||27 Mar 2014 20:20|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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