Instability of Heisenberg-spin-glass-phase transitions |
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Authors: | U Krey |
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Institution: | Fachbereich Physik der Universität Regensburg, W.-Germany |
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Abstract: | It is pointed out that there should be no stable phase transitions for XY- and Heisenberg spin glasses with d ? 4 dimensions, and for Ising spin glasses with d ? 2, in the presence of arbitrarily small random magnetic fields. In the absence of such fields the critical dimensions are 2 and 1, respectively. |
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