Finite-volume energy spectrum of the K−K−K− system
Finite-volume energy spectrum of the K−K−K− system
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DOI：
10.1103/physrevd.102.114523
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发表时间：
2020-09
影响因子：
5
通讯作者：
A. Alexandru;R. Brett;C. Culver;M. Döring;D. Guo;F. Lee;M. Mai
中科院分区：
文献类型：
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作者：
A. Alexandru;R. Brett;C. Culver;M. Döring;D. Guo;F. Lee;M. Mai
多介子系统的动力学与核物理学的几个领域有关。然而，即使是最简单的系统，两个和三个卡子，也很难准备和实验研究。在这里，我们展示了如何使用第一性原理晶格QCD结果提取这些信息。我们(1)将相对论三体量子化条件推广到奇异扇区，首次预测了三个kaon系统在最大同位旋下的激发能级有限体积谱，(2)在有限框内首次给出了该系统的激发能级的点阵QCD计算。我们将我们的预测与这里报告的晶格结果和以前的基态计算进行比较，发现非常吻合。
The dynamics of multi-kaon systems are of relevance for several areas of nuclear physics. However, even the simplest systems, two and three kaons, are hard to prepare and study experimentally. Here we show how to extract this information using first-principle lattice QCD results. We (1) extend the relativistic three-body quantization condition to the strangeness sector, predicting for the first time the excited level finite-volume spectrum of three kaon systems at maximal isospin, and (2) present a first lattice QCD calculation of the excited levels of this system in a finite box. We compare our predictions with the lattice results reported here and with previous ground state calculations and find very good agreement.