Single-particle momentum distribution of Efimov states in noninteger dimensions

Author(s)

Rosa, D. S. ; Frederico, T. ; Krein, G. ; Yamashita, M. T.

• Document type: Journal article
• Source: PHYSICAL REVIEW A; v. 108, n. 3, p. 12-pg., 2023-09-07.

Abstract

We studied the single-particle momentum distribution of mass-imbalanced Efimov states embedded in noninteger dimensions. The contact parameters, which can be related to the thermodynamic properties of the gas, were extracted from the tail of the single-particle momentum densities. We studied the dependence of the contact parameters on the progressive change in the noninteger dimension, ranging from three (D = 3) to two (D = 2) dimensions. Within this interval, we move from the D = 3 regime where the Efimov discrete-scale symmetry drives the physics to close to the critical dimension, which depends on the mass imbalance, where the continuum-scale symmetry takes place. We found that the two- and three-body contacts grow significantly in magnitude with the decrease of the noninteger dimension towards the critical dimension, impacting observables of resonantly interacting trapped Bose gases. (AU)

• FAPESP's process: 19/07767-1 - Nuclear reactions with weakly-bound or cluster-structured radioactive and stable nuclei
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