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On exact mappings between fermionic Ising spin glass and classical spin glass models | Isaac Pérez Castillo
; David Sherrington
; | Date: |
20 Jun 2005 | Subject: | Disordered Systems and Neural Networks | cond-mat.dis-nn | Abstract: | We present in this paper exact analytical expressions for the thermodynamical properties and Green functions of a certain family of fermionic Ising spin-glass models with Hubbard interaction, by noticing that their Hamiltonian is a function of the number operator only. The thermodynamical properties are mapped to the classical Ghatak-Sherrington spin-glass model while the the Density of States (DoS) is related to its joint spin-field distribution. We discuss the presence of the pseudogap in the DoS with the help of this mapping. | Source: | arXiv, cond-mat/0506514 | Services: | Forum | Review | PDF | Favorites |
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