Surface and bulk critical behaviour of the XY chain in a transverse field

Details Surface and bulk critical behaviour of the XY chain in a transverse field Surface and bulk critical behaviour of the XY chain in a transverse field

2000-09-04

arxiv.org/abs/cond-mat/0009038v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, to be published in J. Phys. A

Scientific paper

10.1088/0305-4470/33/33/102

The surface magnetization of the quantum XY chain in a transverse field is
found for arbitrary nearest neighbour interactions in closed form. This allows
to derive the bulk phase diagram in a simple way. The magnetic surface
behaviour and the bulk correlation length are found exactly.

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