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One-step replica symmetry breaking solution for fermionic Ising spin glass in a transverse field | F.M. Zimmer
; S.G. Magalhaes
; | Date: |
9 Jun 2006 | Abstract: | The fermionic Ising spin glass models in a transverse field are investigated in a Grassmann path integral formalism. The Parisi’s scheme of one-step replica symmetry breaking (RSB) is used within the static ansatz. This formalism has already been applied in a theory in which $m$ (Parisi’s block-size parameter) is taken as a constant (PRB 72, 014447 (2005)). Now, it is extended to consider $m$ as a variational parameter. In this case, the results show that RSB is present when $T o0$, in which the system is driven by quantum fluctuations. | Source: | arXiv, cond-mat/0606246 | Services: | Forum | Review | PDF | Favorites |
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