Dynamical Flavour Symmetry Breaking by a Magnetic Field in Lattice QED_3

Дата и время публикации : 1998-02-27T17:30:31Z

Авторы публикации и институты :
K. Farakos
G. Koutsoumbas
N. E. Mavromatos

Ссылка на журнал-издание: Phys.Lett. B431 (1998) 147-160
Коментарии к cтатье: 18 pages, latex, 9 figures, uses psfig and epsf; minor typos in eqs.(10) and (17) corrected
Первичная категория: hep-lat

Все категории : hep-lat, cond-mat, hep-ph, hep-th

Краткий обзор статьи: We perform a lattice study, in the quenched approximation, of dynamical mass generation in a system of relativistic (Dirac) fermions, coupled to an Abelian gauge field in (2+1)-dimensions, in the presence of an external (constant) magnetic field, perpendicular to the spatial planes. It is shown that a strong magnetic field catalyzes chiral symmetry breaking, in agreement with results in the continuum. The r^ole of the higher-Landau poles in inducing a critical temperature above which the phenomenon disappears is pointed out. We also discuss the implications of this model on the opening of a gap in doped antiferromagnetic superconductors.

Category: Physics