Thermal conductivity in 3-D NJL model under external magnetic field

The thermal conductivity of the (2+1)-dimensional NJL model in the presence of a constant magnetic field is calculated in the mean-field approximation and its different asymptotic regimes are analyzed. Taking into account the dynamical generation of a fermion mass due to the magnetic catalysis phenomenon, it is shown that for certain relations among the theory's parameters (particle width, temperature and magnetic field), the profile of the thermal conductivity versus the applied field exhibits kink- and plateau-like behaviors. We point out possible applications to planar condensed matter.

Note:

18 pages, 1 figure Subj-class: Superconductivity Journal-ref: European Physics Journal B 33 (2003) 397

Jona-Lasinio-Nambu model
dimension: 3
magnetic field: external field
mean field approximation
catalysis: magnetic
asymptotic behavior
mass: scaling
critical phenomena
finite temperature
quasiparticle: gap

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