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- W4299592806 abstract "A unified approach to the analysis of quantum phase transitions in some different Curie-Weiss models is proposed such that they are treated and analyzed under the same general scheme. This approach takes three steps: balancing the quantum Hamiltonian by an appropriate factor, rewriting the Hamiltonian in terms of $SU(2)$ operators only, and obtention of a classical Hamiltonian. $SU(2)$ operators are obtained from creation and annihilation operators as linear combinations in the case of fermions and as an inverse Holstein-Primakoff transformation in the case of bosons. This scheme is successfully applied to Lipkin, pairing, Jaynes-Cummings, bilayer, and Heisenberg models." @default.
- W4299592806 created "2022-10-02" @default.
- W4299592806 creator A5035281912 @default.
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- W4299592806 date "2017-12-20" @default.
- W4299592806 modified "2023-10-17" @default.
- W4299592806 title "Analysis of quantum phase transition in some different Curie-Weiss models: a unified approach" @default.
- W4299592806 doi "https://doi.org/10.48550/arxiv.1712.07634" @default.
- W4299592806 hasPublicationYear "2017" @default.
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