标题： 任意量子系统的维格纳函数 显示英文标题

标题： Wigner Functions for Arbitrary Quantum Systems

摘要： 对于任意量子系统构造一个完整且连续的维格纳函数的可能性已经是一个研究了超过50年的课题。 这一问题的一个关键系统是自旋系综，它被用来说明该问题的难点。 在这里，我们提出了一种通用且一致的框架，利用物理系统中的潜在对称性来构造维格纳函数。 维格纳函数可以用于完全描述任意维度或系综大小的量子系统。 显示英文摘要

摘要： The possibility of constructing a complete, continuous Wigner function for any quantum system has been a subject of investigation for over 50 years. A key system that has served to illustrate the difficulties of this problem has been an ensemble of spins. Here we present a general and consistent framework for constructing Wigner functions exploiting the underlying symmetries in the physical system at hand. The Wigner function can be used to fully describe any quantum system of arbitrary dimension or ensemble size.