Since the pioneering work of Lüscher in the 1980s it is well known that considering quantum systems in finite volume, specifically, finite periodic boxes, can be used as a powerful computational tool to extract physical observables. While this formalism has been worked out in great detail in the two-body sector, much effort is currently being invested into deriving analogous relations for systems with more constituents. This work is relevant not only for nuclear physics, where lattice methods are now able to calculate fewand many-nucleon states, but also for other fields such as simulations of cold atoms. This article discusses recent progress regarding the extraction of few-body bound-state and resonance properties from finite-volume calculations of systems with an arbitrary number of constituents.

中文翻译：

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有限体积中的少体束缚态和共振

自 20 世纪 80 年代 Lüscher 的开创性工作以来，众​​所周知，考虑有限体积（特别是有限周期盒）中的量子系统，可以用作提取物理可观测值的强大计算工具。虽然这种形式主义已经在二体领域得到了非常详细的解决，但目前正在投入大量精力来推导具有更多成分的系统的类似关系。这项工作不仅与核物理相关（晶格方法现在能够计算少核子态和多核子态），而且还与其他领域相关，例如冷原子的模拟。本文讨论了从具有任意数量成分的系统的有限体积计算中提取少体束缚态和共振特性的最新进展。