LXX International conference "NUCLEUS – 2020. Nuclear physics and elementary particle physics. Nuclear physics technologies"

Efimov states in three-atomic systems

17 Oct 2020, 15:00

25m

Online

Oral report Section 1. Experimental and theoretical studies of the properties of atomic nuclei. Section 1. Experimental and theoretical studies of the properties of atomic nuclei

Speaker

E.A. Kolganova

Description

Three-atomic molecules at ultralow energies are of a great interest in both experiment and theory.
The ability to control the scattering length in ultracold gases make these systems ideal candidates for experimental study of Efimov
physics [1]. After the first successful observation of Efimov states in an ultracold Cesium gas [2],
a lot of the experimental evidence for the Efimov states in three-atomic systems consisting of He, Li, K, Rb, Cs atoms and its combinations
were reported (see review [3]).

The properties of ultracold triatomic systems are determined by the van der Waals interaction. Analyzing interaction potentials between different species we discuss the possible existence of Efimov states in three-body systems. Some our results obtained using Faddeev calculations [4] and a short review of other calculations will be presented.

1. V. Efimov, Phys. Lett. B 33, 563 (1970).
2. T. Kraemer et al., Nature 440, 315 (2006).
3. P. Naidon and Sh.~Endo, Rep. Prog. Phys. 80, 056001 (2017).
4. E.A. Kolganova,V. Roudnev, Few-Body Syst. 60, 32 (2019).