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THE GROUNDSTATES AND PHASES OF THE TWO- DIMENSIONAL FULLY FRUSTRATED XY MODELThe groundstates and phases of the two-dimensional fully frustrated XY model
- Other Titles
- The groundstates and phases of the two-dimensional fully frustrated XY model
- Authors
- Minnhagen, P[Minnhagen, Petter]; Bernhardsson, S[Bernhardsson, Sebastian]; Kim, BJ[Kim, Beom Jun]
- Issue Date
- Aug-2009
- Publisher
- WORLD SCIENTIFIC PUBL CO PTE LTD
- Citation
- INTERNATIONAL JOURNAL OF MODERN PHYSICS B, v.23, no.20-21, pp.3939 - 3950
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF MODERN PHYSICS B
- Volume
- 23
- Number
- 20-21
- Start Page
- 3939
- End Page
- 3950
- ISSN
- 0217-9792
- Abstract
- The 2D Fully Frustrated XY (FFXY) class of models is shown to contain a new grounds state in addition to the checkerboard ground state of the standard 2D XY model. The spin configuration of this additional groundstate is obtained and its connection to a broken Z(2)-symmetry explained. This means that the class of 2D FFXY models belongs within a U(1) circle times Z(2) circle times Z(2)-symmetry phase-transition representation. The phase diagram is reviewed and the central charges of the four multicritical points described. The implications for the standard 2D FFXY-model are discussed and elucidated, in particular with respect to the long standing controversy concerning the phase transitions of the standard 2D FFXY-model.
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