Microscopic study of He-2-SF6 trimers

Microscopic study of He-2-SF6 trimers

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Microscopic study of He-2-SF6 trimers

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Barletta, P.; Fabrocini, A.; Kievsky, A.; Navarro Faus, Jesús; Polls, Artur
Aquest document és un/a article, creat/da en: 2003
The He2-SF6 trimers, in their different He isotopic combinations, are studied both in the framework of the correlated Jastrow approach and of the Correlated Hyperspherical Harmonics expansion method. The energetics and structure of the He-SF6 dimers are analyzed, and the existence of a characteristic rotational band in the excitation spectrum is discussed, as well as the isotopic differences. The binding energies and the spatial properties of the trimers, in their ground and lowest lying excited states, obtained by the Jastrow ansatz are in excellent agreement with the results of the converged CHH expansion. The introduction of the He-He correlation makes all trimers bound by largely suppressing the short range He-He repulsion. The structural properties of the trimers are qualitatively explained in terms of the shape of the interactions, Pauli principle and masses of the constituents.

    Barletta, P. Fabrocini, A. Kievsky, A. Navarro Faus, Jesús Polls, Artur 2003 Microscopic study of He-2-SF6 trimers Physical Review A 68 5 053205
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