论文标题
液态氦的理论方法
Theoretical approaches to liquid Helium
论文作者
论文摘要
在本文中，我们回顾了用于采用微观方法的液氦研究的主要理论方法，即从系统的许多粒子哈密顿式开始。在介绍了第一个早期方法之后，我们讨论了两个主要问题。在第一个中，我们报告了基于变异方法的理论方法的主要成分，并讨论了与它们获得的高精度以及高度准确的试验波函数设计相关进度的讨论。在第二部分中，简要讨论了本研究中使用的主要随机方法。总共反映了液态氦的研究与开发新的，极为强大的方法的进步之间的牢固联系，以应对自然界中最强烈的量子多体系统之一。
In this article, we review the main theoretical methods applied to the study of liquid Helium adopting a microscopic approach, that is, starting from the many-particle Hamiltonian of the system. Following an introduction on the first early approaches, we discuss two main issues. In the first one, we report the main ingredients of a theoretical approach based on the variational method, with the discussion of the high accuracy obtained with them and the related progress in the design of highly accurate trial wave functions. In the second part, the main stochastic methods used in this study are briefly discussed. Altogether reflects the strong links between the study of liquid Helium and the progress in the development of new and extremely powerful approaches to deal with one of the most strongly quantum many-body systems in Nature.
