Multicritical crossovers near the dilute Bose gas quantum critical point

Details Multicritical crossovers near the dilute Bose gas quantum critical point Multicritical crossovers near the dilute Bose gas quantum critical point

1996-02-13

arxiv.org/abs/cond-mat/9602073v1

Phys.Rev.Lett. 76 (1996) 4412

Physics

Condensed Matter

10 pages, REVTEX 3.0, 2 EPS figures

Scientific paper

10.1103/PhysRevLett.76.4412

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.

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