Generalized One-Particle Density Matrices and Quasifree States
Generalized One-Particle Density Matrices and Quasifree States
复制标题
广义单粒子密度矩阵和准自由态
DOI:
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Edmund Menge
中科院分区:
文献类型:
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作者:
V. Bach;S. Breteaux;H. Knorr;Edmund Menge
In the spirit of the generalized one-particle density matrix for fermions, we introduce generalized one- and two-particle density matrices to state representability condi- tions up to second order for boson systems without assuming particle number-conservation. Furthermore, we show for both particle species that, for a semibounded Hamiltonian, the infimum of the variation of the energy functional w.r.t quasifree states coincides with the one of a variation over pure quasifree states. Moreover, it is proven for fermions that only pure quasifree states have a generalized 1-pdm that is a projection, and a similar statement for bosons.
影响因子:
0.9
作者:
V. Bach;S. Breteaux;T. Tzaneteas
通讯作者:
T. Tzaneteas