Nuclear response at zero and finite temperature

Nuclear response at zero and finite temperature
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零温度和有限温度下的核反应

DOI:
10.1051/epjconf/201922301033
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发表时间:
2019
影响因子:
--
通讯作者:
Corradi, L.
Corradi, L.
中科院分区:
--
文献类型:
--
作者:
Litvinova, Elena;Schuck, Peter;Wibowo, Herlik;de Angelis, G.;Corradi, L.

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本文介绍了核多体问题的一些最新进展,如在描述介质中双核子传播体时对高阶相关和有限温度的处理。在这项工作中,我们讨论了粒子空穴型的双时间传播子,它描述了有限核在没有核子转移的情况下对外部探针的响应。一般理论是用运动方程法来表述的,这些传播子的唯一输入来自裸核子-核子相互作用。为了研究不同复杂度的能量依赖核,在有效介子-核子拉格朗日量的基础上进行了数值实现。将带ph⊗声子组态理论的有限温度扩展应用于中等质量原子核的多极响应研究。
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 withph ⊗ phononconfigurations is applied to a study of the multipole response of medium-mass nuclei.
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