Gap generation in the XXZ model in a transverse magnetic field

Details Gap generation in the XXZ model in a transverse magnetic field Gap generation in the XXZ model in a transverse magnetic field

2001-12-09

arxiv.org/abs/cond-mat/0112145v2

Phys.Rev.B 65, 172409 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure, Latex

Scientific paper

10.1103/PhysRevB.65.172409

The ground state phase diagram of the 1D XXZ model in transverse magnetic field is obtained. It consists of the gapped phases with different types of long range order (LRO) and critical lines at which the gap and the LRO vanish. Using scaling estimations and a mean-field approach as well as numerical results we found critical indices of the gap and the LRO in the vicinity of all critical lines.

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