arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.13504nucl-thcond-mat.quant-gas
收藏

叶菲莫夫物理学与核物理学的联系

Efimov Physics and Connections to Nuclear Physics

A. Kievsky, L. Girlanda, M. Gattobigio, M. Viviani

摘要:

以浅二体束缚态或虚态为特征的物理系统在大距离上受连续尺度不变性的支配,当三个或更多粒子起作用时,连续尺度不变性被打破为离散不变性。这种对称性导致了不同系统的普遍行为,与潜在相互作用的细节无关,根源于$\ell/a_B \ll 1$比的小,其中长度$a_B$与两体系统$E_2=\hbar^2/m a_B^2$的结合能相关,而$\ell$是由相互作用范围给出的自然长度。Efimov物理学指的是这种普遍的行为,这种行为往往被系统特定的非普遍效应所隐藏。在这项工作中,我们通过提供一个明确的链接的物理系统,其单一的限制,其中$a_B\rightarrow\infty$,并显示核系统属于这一类的普遍性,确定普遍的属性。

英文摘要:

Physical systems characterized by a shallow two-body bound or virtual state are governed at large distances by a continuous-scale invariance, which is broken to a discrete one when three or more particles come into play. This symmetry induces a universal behavior for different systems, independent of the details of the underlying interaction, rooted in the smallness of the ratio $\ell/a_B \ll 1$, where the length $a_B$ is associated to the binding energy of the two-body system $E_2=\hbar^2/m a_B^2$ and $\ell$ is the natural length given by the interaction range. Efimov physics refers to this universal behavior, which is often hidden by the on-set of system-specific non-universal effects. In this work we identify universal properties by providing an explicit link of physical systems to their unitary limit, in which $a_B\rightarrow\infty$, and show that nuclear systems belong to this class of universality.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑