Magnetic catalysis in a P-even, chiral-invariant three-dimensional model with four-fermion interaction

Details Magnetic catalysis in a P-even, chiral-invariant three-dimensional model with four-fermion interaction Magnetic catalysis in a P-even, chiral-invariant three-dimensional model with four-fermion interaction

2000-10-12

arxiv.org/abs/hep-ph/0010123v1

Theor.Math.Phys. 124 (2000) 1132; Teor.Mat.Fiz. 124 (2000) 323-338

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages and 3 figures

Scientific paper

The influence of an external constant and homogeneous magnetic field H on the phase structure of the P-symmetric, chiral invariant 3-dimensional field theory model with two four-fermion interaction structures is considered. An arbitrary small (nonzero) magnetic field is shown to induce spontaneous violation of the initial symmetry (magnetic catalysis). Moreover, vacuum of the model at H>0 can be either P-symmetric or chiral invariant, depending on the values of the coupling constants.

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