Abstract
The binding energy of (4He)3 has been calculated using the Faddeev theory and a model 4He-4He interaction of Herzfeld form. Both Blatt's SQA3 and Burkhardt's Lennard-Jones phase-equivalent parameters yield bound trimers with ground-state energies of 0·07 and 0·02 K respectively. These results compare very favourably, in speed and accuracy, with those obtained from the equivalent-two-body-method (ETBM) and suggest the applicability of Faddeev methods to these molecular systems.
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