ZhETF, Vol. 135,
p. 969 (May 2009)
(English translation - JETP,
Vol. 108, No. 5,
available online at www.springer.com
SPONTANEOUS SYMMETRY BREAKING IN A SYSTEM OF STRONGLY INTERACTING MULTICOMPONENT FERMIONS (ELECTRONS WITH SPIN AND CONDUCTING NANOTUBES)
Afonin V.V., Gurevich V.L., Petrov V.Yu.
Received: October 11, 2008
PACS: 71.10.Hf, 71.10.Pm, 73.63.Fg
We calculate the ground-state wave functions for a system of multicomponent strongly interacting fermions. We show that it is a state with spontaneously broken chiral symmetry that discribes a phase with a finite density of chiral complexes. The number of particles constituting a complex depends on the number of fermion components. For example, in the case of two-component electrons (spin), the condensate is built of four-particle complexes consisting of two ``right'' electrons and two ``left'' holes with the opposite spins.