λ-transition in low dimensional systems with SU_q(2) symmetry
arXiv:cond-mat/9711286 · doi:10.1016/S0375-9601(98)00149-2
Abstract
We show that invariant systems in one and two dimensions exhibit Bose-Einstein condensation for . For these systems there is a -transition at the critical temperature. The critical temperature and the gap in the heat capacity increase more rapidly for small deviations from the standard value , and they become approximately constant for large values of . For low temperatures and the entropy is lower than the entropy of an ideal Bose gas.
LaTeX file, 15 pages, four figures, uses epsf.sty