Surface and bulk critical behaviour of the XY chain in a transverse field
classification
❄️ cond-mat.stat-mech
keywords
bulksurfacebehaviourchainfieldfoundtransverseallows
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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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