Multicritical crossovers near the dilute Bose gas quantum critical point
arXiv:cond-mat/9602073 · doi:10.1103/PhysRevLett.76.4412
Abstract
Many zero temperature transitions, involving the deviation in the value of a $U(1)$ conserved charge from a quantized value, are described by the dilute Bose gas quantum critical point. On such transitions, we study the consequences of perturbations which break the symmetry down to $Z_N$ in $d$ spatial dimensions. For the case $d=1$, $N=2$, we obtain exact, finite temperature, multicritical crossover functions by a mapping to an integrable lattice model.
10 pages, REVTEX 3.0, 2 EPS figures