Two simple methods for the computation of the density matrix of “heavy” quantum particles
作者： Bo Hellsing , Shin-Ichi Sawada , Horia Mtiu
DOI: 10.1016/0009-2614(85)80226-8
关键词: Computation 、 Density matrix renormalization group 、 Quantum 、 Statistical physics 、 Density matrix 、 Variational method 、 State-transition matrix 、 Harmonic (mathematics) 、 Physics 、 Gaussian
摘要: Abstract Two simple methods are presented for the computation of density matrix a localized quantum particle. One method is based on local harmonic approximation and other variational method, which assumes that retains Gaussian functional form as temperature decreased.
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