温热稠密物质是一种由电子和不同价态离子组成的典型的强耦合非理想多粒子量子体系。由温热稠密环境中离子强耦合效应以及电子简并效应引起的粒子之间相互作用的复杂性使得人们对于温热稠密物质性质的准确描述具有极大的挑战性。由于粒子之间相互作用的强烈耦合使得如两体碰撞近似和线性响应等理论假设变得不再适用。为了描述温热稠密体系的宏观物理性质（如物态方程，电导等），理论建模过程必须考虑多粒子环境中的多体动态关联和非线性效应。描述这些多体效应的核心物理量是体系的介电响应函数。本项目拟采用有限温度格林函数的GW近似方法研究多组分温热稠密等离子环境中的多体动态关联，并通过引入动态结构因子来构建体系的有效介电响应函数，在此基础上针对电离能下降，电子态能谱的展宽和电子的态密度分布建立相应的理论模型和数值计算方法，并研究多体动态关联对原子结构以及电子结构的影响机理。

Warm/hot dense matters are typical strongly interacting, partially ionized many-body systems. An accurate description of mutual interactions of particles in these systems is of essential importance. However, in such systems strong correlation of the ion subsystem and degeneracy of electrons challenge the theoretical modelling. Theoretical assumptions such as binary collision approximation and linear response become invalid due to the strong coupling of particle interactions. In order to describe macroscopic properties of physical systems (such as the equation of state, electric conductivity, etc.), multi-particle dynamical correlations and nonlinear effects within the many-body environment have to be taken into account in the theoretical modelling. The present project is devoted to the investigation of how the properties of an atomic/ionic system are modified under the influence of a dense, strongly coupled multi-component plasma environment. The method of finite-temperature Green’s function will be used to investigate the multi-particle dynamical correlation of the dense, strongly interacting charged Coulomb systems, where the self-consistent GW approach in combination with the vertex correction will be performed. In particular, we will concentrate on developing a systematic approach to describe the phenomenon of ionization potential depression as well as the density of state of the electronic structure. Programming of related numerical approaches for the calculation of the ionization potential depression and the density of state will be implemented. The influence mechanism of multi-particle dynamical correlation on atomic structure and electronic structure will be also studied in detail in this project.