Magnetic-field phase transition in a one-dimensional system of electrons with attraction
Dzhaparidze G.I., Nersesyan A.A.
Within the framework of an exactly solvable model with a linear spectrum, it is shown that at Τ = 0 a magnetic-phase transition from the nonmagnetic into the paramagnetic state, due to the change in the character of the spectrum of the spin excitations, can occur in one-dimensional system electrons with attraction between the particles.