Flavoured large N gauge theory on a compact space with an external magnetic field

Filev, Veselin G. and Ihl, Matthias (2012) Flavoured large N gauge theory on a compact space with an external magnetic field. Journal of High Energy Physics, 2013 (1). ISSN 1029-8479


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Official URL: http://doi.org/10.1007/JHEP01(2013)130


The phase structure of flavoured N = 2 SYM on a three sphere in an external magnetic field is studied. The pairing effect of the magnetic field competes with the dissociating effect of the Casimir energy, leading to an interesting phase structure of confined and deconfined phases separated by a critical curve of a first order quantum phase transition. At vanishing magnetic field the phase transition is of a third order. For sufficiently strong magnetic field, the only stable phase is the confined phase and magnetic catalysis of chiral symmetry breaking is realized. The meson spectra of the theory exhibit Zeeman splitting and level crossing and feature a finite jump at the phase transition between the confined and deconfined phases. At strong magnetic field the ground state has a massless mode corresponding to the Goldstone boson associated with the spontaneously broken U(1) R-symmetry analogous to the η' meson in QCD.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 05 Oct 2017 19:26
Last Modified: 26 Jul 2018 10:14
URI: http://dair.dias.ie/id/eprint/290

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