Abstract
Phase diagram of S = 1 XXZ chain in a staggered magnetic field is obtained numerically. The Berezinskii-Kosterlitz-Thouless transition between the XY and the ant antiferromagnetic phases is studied by the level-spectroscopy. Moreover we find that there is no distinction between the Haldane and the antiferromagnetic phases, since the Gaussian critical line does not appear, in contrast to the S = 1/2 case. It is expected that some hidden Z2 × Z2 symmetry breaking happens not only in the Haldane phase but also in the antiferromagnetic one.
| Original language | English |
|---|---|
| Pages (from-to) | 302-306 |
| Number of pages | 5 |
| Journal | journal of the physical society of japan |
| Volume | 67 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1998 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)