Universality of excited three-body bound states in one dimension. (5th January 2022)

• Record Type: Journal Article
• Authors: Happ, Lucas; Zimmermann, Matthias; Efremov, Maxim A
• Is Part Of: Journal of physics. Volume 55:Number 1(2022)
• Publication Date: 2022-01-05
• Subjects: few-body systems -- low-dimensional systems -- universality; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/ac3cc8
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We study a heavy–heavy–light three-body system confined to one space dimension in the regime where an excited state in the heavy–light subsystems becomes weakly bound. The associated two-body system is characterized by (i) the structure of the weakly-bound excited heavy–light state and (ii) the presence of deeply-bound heavy–light states. The consequences of these aspects for the behavior of the three-body system are analyzed. We find a strong indication for universal behavior of both three-body binding energies and wave functions for different weakly-bound excited states in the heavy–light subsystems.