Microscopic Theory of Quantum Fluids and Nuclear Systems

计算物理学的不断进步将被用来描述和预测在密度和相互作用强度的现实条件下强耦合量子多粒子系统的行为。将采用两种互补的微观方法：一种是基于空间中量子系统的相关结构和自旋自由度的明确描述；另一个重点是在多粒子介质中出现的粒子的内在性质和相互作用的变化。这些强大的计算方法提供了广泛的系统和基本感兴趣的现象，包括超流体和超导体存在于脉冲星内部的超高温；液氦在近血清温度下的超流相变点阵规范模型提供了对真空本质和夸克约束机制的见解；原子核中的短距离过程及原子核理论与量子色动力学的联系以及原子核激发态和强耦合电子系统的丰富全景。预计对这些问题的研究将为现有或计划中的实验工作提供理论支持，包括CEBAF的项目和轨道x射线天文台对中子星的观测。在一项新的跨学科倡议中，神经网络计算结构将用于核的现象学分析和具有潜在技术重要性的材料。​​!!A (Times New Roman Symbol & Arial " h; %; % yi / terri l. hicks

9307484 Clark Ongoing advances in computational physics will be exploited to characterize and predict the behavior of strongly coupled quantum many-particle systems under realistic conditions of density and interaction strengths. Two complementary microscopic approaches will be pursued: one is based on explicit descriptions of the correlation structure of the quantum system in space and spin degrees of freedom; the other focuses on the modification in intrinsic properties and interactions experienced by a particle emerged in a many-particle medium. These powerful computational methods give access to a wide range of systems and phenomena of fundamental interest, including the superfluids and superconductors that exist at superhigh temperatures inside pulsars; the superfluid phase transition in liquid helium near sero temperature; lattice-gauge models that offer insights into the nature of the vacuum and the mechanism of quark confinement; short-distance processes in nuclei and the link between nucleonic theories and quantum chromodynamics; and the rich panorama of excited states of nuclei and strongly coupled electronic systems. Projected research on these problems will provide theoretical support for existing or planned experimental efforts, including projects at CEBAF and observations of neutron stars by orbiting X-ray observatories. In a novel interdisciplinary initiative, neural network computational structures will be used for phenomenological analysis of nuclei and of materials of potential technological importance. ! ! A ( Times New Roman Symbol & Arial " h ; % ; % ı / terri l. hicks terri l. hicks