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Holographic description of the phase diagram of a chiral symmetry breaking gauge theory

Holographic description of the phase diagram of a chiral symmetry breaking gauge theory
Holographic description of the phase diagram of a chiral symmetry breaking gauge theory
The large N_c N=4 gauge theory with quenched N=2 quark matter in the presence of a magnetic field displays chiral symmetry breaking. We study the temperature and chemical potential dependence of this theory using its gravity dual (based on the D3/D7 brane system). With massless quarks, at zero chemical potential, the theory displays a first order thermal transition where chiral symmetry is restored and simultaneously the mesons of the theory melt. At zero temperature, these transitions with chemical potential are second order and occur at different chemical potential values. Between the three there are two tri-critical points, the positions of which we identify. At finite quark mass the second order transition for chiral symmetry becomes a cross over and there is a critical point at the end of the first order transition, while the meson melting transition remains similar to the massless quark case. We track the movement of the critical points as the mass is raised relative to the magnetic field.
gauge-gravity correspondence, adS-cft correspondence, qcd
1029-8479
1-22
Evans, Nicholas
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Gebauer, Astrid
d0a11ca4-8f06-48aa-b8ea-7ac897f90038
Keun-Young, Kim
9f0fff6e-095b-4a6c-ad70-ced74fdbcfae
Magou, Maria
2a8aa0ac-22e7-4809-becc-ba46bdffb07a
Evans, Nicholas
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Gebauer, Astrid
d0a11ca4-8f06-48aa-b8ea-7ac897f90038
Keun-Young, Kim
9f0fff6e-095b-4a6c-ad70-ced74fdbcfae
Magou, Maria
2a8aa0ac-22e7-4809-becc-ba46bdffb07a

Evans, Nicholas, Gebauer, Astrid, Keun-Young, Kim and Magou, Maria (2010) Holographic description of the phase diagram of a chiral symmetry breaking gauge theory. Journal of High Energy Physics, 2010 (3), 1-22. (doi:10.1007/JHEP03(2010)132).

Record type: Article

Abstract

The large N_c N=4 gauge theory with quenched N=2 quark matter in the presence of a magnetic field displays chiral symmetry breaking. We study the temperature and chemical potential dependence of this theory using its gravity dual (based on the D3/D7 brane system). With massless quarks, at zero chemical potential, the theory displays a first order thermal transition where chiral symmetry is restored and simultaneously the mesons of the theory melt. At zero temperature, these transitions with chemical potential are second order and occur at different chemical potential values. Between the three there are two tri-critical points, the positions of which we identify. At finite quark mass the second order transition for chiral symmetry becomes a cross over and there is a critical point at the end of the first order transition, while the meson melting transition remains similar to the massless quark case. We track the movement of the critical points as the mass is raised relative to the magnetic field.

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Submitted date: 9 February 2010
Published date: 31 March 2010
Keywords: gauge-gravity correspondence, adS-cft correspondence, qcd
Organisations: University of Southampton

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Local EPrints ID: 143817
URI: https://eprints.soton.ac.uk/id/eprint/143817
ISSN: 1029-8479
PURE UUID: 2816a7fe-0914-47e3-9c23-63b5ab7a04c0

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Date deposited: 13 Apr 2010 11:57
Last modified: 18 Jul 2017 23:09

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Contributors

Author: Nicholas Evans
Author: Astrid Gebauer
Author: Kim Keun-Young
Author: Maria Magou

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