Physics of Atomic Nuclei

, Volume 77, Issue 4, pp 430–437

Recent advances in description of few two-component fermions

Nuclei Theory

DOI: 10.1134/S1063778814030120

Cite this article as:
Kartavtsev, O.I. & Malykh, A.V. Phys. Atom. Nuclei (2014) 77: 430. doi:10.1134/S1063778814030120


Overview of the recent advances in description of the few two-component fermions is presented. Themodel of zero-range interaction is generally considered to discuss the principal aspects of the few-body dynamics. Particular attention is paid to detailed description of two identical fermions of mass m and a distinct particle of mass m1: it turns out that two LP = 1 three-body bound states emerge if mass ratio m/m1 increases up to the critical value µc ≈ 13.607, abovewhich the Efimov effect takes place. The topics considered include rigorous treatment of the few-fermion problem in the zero-range interaction limit, lowdimensional results, the four-body energy spectrum, crossover of the energy spectra for m/m1 near µc, and properties of potential-dependent states. At last, enlisted are the problems, whose solution is in due course.

Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  1. 1.Joint Institute for Nuclear ResearchDubnaRussia