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arXiv 1908.02437nucl-th
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零温和有限温核反应

Nuclear response at zero and finite temperature

Elena Litvinova, Peter Schuck, Herlik Wibowo

摘要:

本文介绍了核多体问题的一些最新进展,如介质中双核子传播子描述中高阶关联和有限温度的处理。在这项工作中,我们讨论的两个时间传播子的粒子-空穴型,它描述了有限核的外部探针没有核子转移的响应。一般理论是根据这些传播子的运动方程方法,仅从裸核子-核子相互作用输入。为了研究不同复杂度的能量相关核,在有效介子-核子拉格朗日量的基础上进行了数值实现。本文将$ph\otimes phonon$组态理论推广到有限温度,研究了中等质量核的多极响应。

英文摘要:

We present some recent developments on the nuclear many-body problem, such as the treatment of high-order correlations and finite temperature in the description of in-medium two-nucleon propagators. In this work we discuss two-time propagators of the particle-hole type, which describe the response of finite nuclei to external probes without nucleon transfer. The general theory is formulated in terms of the equation of motion method for these propagators with the only input from the bare nucleon-nucleon interaction. The numerical implementation was performed on the basis of the effective mason-nucleon Lagrangian in order to study the energy-dependent kernels of different complexity. The finite-temperature extension of the theory with $ph\otimes phonon$ configurations is applied to a study of the multipole response of medium-mass nuclei.

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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