EFFECTIVE-MASS OF ONE HE-4 ATOM IN LIQUID-HE-3

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关键词: MICROSCOPIC CALCULATIONS;    DEPENDENT CORRELATIONS;    LOW-TEMPERATURES;    GROUND-STATE;   

来源: SCIE

【 摘 要 】

A microscopic calculation of the effective mass of one He-4 impurity in homogeneous liquid He-3 at zero temperature is performed for an extended Jastrow-Slater wave function, including two- and three-body dynamical correlations and also backflow correlations between the He-4 atom and the particles in the medium. The effective mass at equilibrium density, m4*/m4 = 1.21, is in very good agreement with the recent experimental determination by Edwards et al. The three-particle correlations appear to give a small contribution to the effective mass and different approximations for the three-particle distribution function give almost identical results for m4*/m4.