Binding Energies and Scattering Observables in the 4^He_3 Atomic System

Details Binding Energies and Scattering Observables in the 4^He_3 Atomic System Binding Energies and Scattering Observables in the 4^He_3 Atomic System

1999-10-12

arxiv.org/abs/physics/9910016v2

Eur.Phys.J. D13 (2001) 33-41

Physics

Atomic Physics

RevTeX, 14 pages, 1 eps-figure; list of references has been extended and some minor changes of the text have been done

Scientific paper

10.1007/s100530170284

The ^4He_3 bound states and the scattering of a ^4He atom off a ^4He dimer at ultra-low energies are investigated using a hard-core version of the Faddeev differential equations. Various realistic ^4He-^4He interactions were employed, amomg them the LM2M2 potential by Aziz and Slaman and the recent TTY potential by Tang, Toennies and Yiu. The ground state and the excited (Efimov) state obtained are compared with other results. The scattering lengths and the atom-diatom phase shifts were calculated for center of mass energies up to 2.45 mK. It was found that the LM2M2 and TTY potentials, although of quite different structure, give practically the same bound-state and scattering results.

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