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Splitting the multiphase point

Abstract:
Models with competing interactions, for example the ANNNI model, can have special points at which the ground state is infinitely degenerate, so-called multiphase points. Small perturbations can lift this degeneracy and give rise to infinite sequences of long-period phases. This paper compares the effect of three possible perturbations, quantum fluctuations, thermal fluctuations and the softening of the spins from their quantised positions.

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
Journal:
Phase Transitions More from this journal
Volume:
57
Issue:
1-3 SEC . B
Pages:
49-58
Publication date:
1996-01-01
ISSN:
0141-1594
Pubs id:
pubs:365448
UUID:
uuid:8c8e1f78-59b7-43d6-a9a8-ec19a880b60d
Local pid:
pubs:365448
Source identifiers:
365448
Deposit date:
2013-11-17

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