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arXiv 1712.04494nucl-th
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粒子-声子耦合模型的声子空间自洽性

Self-consistency in the phonon space of the particle-phonon coupling model

V. Tselyaev, N. Lyutorovich, J. Speth, P. -G. Reinhard

摘要:

本文给出了时间块近似(TBA)的非线性推广。TBA是在格林函数方法和粒子-声子耦合模型中发展的扩展无规相位近似(RPA)的一个版本。在广义TBA中,自洽原理被推广到模型的声子空间。数值算例表明,这种非线性形式的TBA导致了结果的收敛性与扩大的声子空间的模型。

英文摘要:

In the paper the non-linear generalization of the time blocking approximation (TBA) is presented. The TBA is one of the versions of the extended random-phase approximation (RPA) developed within the Green-function method and the particle-phonon coupling model. In the generalized version of the TBA the self-consistency principle is extended onto the phonon space of the model. The numerical examples show that this non-linear version of the TBA leads to the convergence of the results with respect to enlarging the phonon space of the model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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