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Conditions for Efimov physics for finite-range potentials

Journal Article · · Physical Review. A
; ;  [1]; ;  [2]
  1. Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
  2. Department of Physics, Kansas State University, Manhattan, Kansas 66506 (United States)
We consider a system of three identical bosons near a Feshbach resonance in the universal regime with large scattering length usually described by model-independent zero-range potentials. We employ the adiabatic hyperspherical approximation and derive the rigorous large-distance equation for the adiabatic potential for finite-range interactions. The effective range correction to the zero-range approximation must be supplemented by a new term of the same order. The nonadiabatic term can be decisive. Efimov physics is always confined to the range between effective range and scattering length. The analytical results agree with numerical calculations for realistic potentials.
OSTI ID:
21313306
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 80; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English

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