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The Pokrovski-Talapov phase transition and quantum groups
We show that the XY quantum chain in a magnetic field is invariant under a two parameter deformation of the $SU(1/1)$ superalgebra. One is led to an extension of the braid group and the Hecke algebras which reduce to the known ones when the two parameter coincide. The physical significance of the tw...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1992
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/234275 |