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Gauge-invariant variational study of the Hamiltonian U(1) and Z$_{N}$ model and critical space-time dimensionality
Using a gauge-invariant variational formalism the author finds in D=4 dimensions a first-order phase transition for Z/sub 2,3,4/ and two second ones for Z/sub N/ with N>or=5. At D=3.2 the transitions of Z /sub 2/ and Z/sub 4/ become of second order, whereas that of Z/sub 3/ for D>or=3 remains...
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| Lenguaje: | eng |
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1981
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| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(82)91250-3 http://cds.cern.ch/record/135126 |