Fermionic Model with a Non-Hermitian Hamiltonian

被引:0
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作者
N. Bebiano
J. da Providência
S. Nishiyama
J. P. da Providência
机构
[1] University of Coimbra,Department of Mathematics, CMUC
[2] University of Coimbra,Department of Physics
[3] CFisUC,Departamento de Física
[4] University of Beira Interior,undefined
[5] CMA,undefined
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关键词
Antisymmetric tensor; Hamiltonian; Fermion; Pseudo-fermion; Complete biorthogonal sets; Hermitian; Non-Hermitian; Metric matrix; Partition function;
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摘要
This paper deals with the mathematical spectral analysis and physical interpretation of a fermionic system described by a non-Hermitian Hamiltonian possessing real eigenvalues. A statistical thermodynamical description of such a system is considered. Approximate expressions for the energy expectation value and the number operator expectation value, in terms of the absolute temperature T and of the chemical potential μ, are obtained, based on the Euler-Maclaurin formula.
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页码:143 / 152
页数:9
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