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

D. Karevski
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Abstract

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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D. Karevski. 2000-09-04. Surface and bulk critical behaviour of the XY chain in a transverse field. https://doi.org/10.1088/0305-4470%2F33%2F33%2F102

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