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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.
Publication status:
Published

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Publisher copy:
10.1080/01411599608214644

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Volume:
57
Issue:
1-3
Pages:
49-58
Publication date:
1996
DOI:
EISSN:
1029-0338
ISSN:
0141-1594
URN:
uuid:5b3d6830-c67d-4828-ad9e-81607cf0c1a8
Source identifiers:
8300
Local pid:
pubs:8300

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