Magnetic catalysis in a P-even, chiral-invariant three-dimensional model with four-fermion interaction |
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Authors: | V Ch Zhukovskii K G Klimenko V V Khudyakov |
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Institution: | (1) Moscow State University, Moscow, Russia;(2) Institute for High-Energy Physics, Protvino, Russia |
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Abstract: | We study how an external magnetic field H affects the phase structure of a P-even, chiral-invariant three-dimensional model
of field theory with a four-fermion interaction. An arbitrarily small, but nonzero, magnetic field induces the spontaneous
breaking of the initial symmetry (the magnetic catalysis phenomenon). Depending on the values of the coupling constants, the
model vacuum is either P-even or chiral invariant for H≠0.
Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 124, No. 2, pp. 323–338, August, 2000. |
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