arXiv:cond-mat/0203484 Abstract

arXiv:cond-mat/0203484Abstract References Reviews Resources

Effective Mass of Atom and Excitation Spectrum in Liquid Helium-4 at T=0 K

Published 2002-03-25Version 1

A self-consistent approach is applied for the calculations within the two-time temperature Green functions formalism in the random phase approximation. The effective mass of He4 atom is computed as $m^*=1.58 m$. The excitation spectrum is found to be in a satisfactory agreement with the experiment. The sound velocity is calculated as 230 m/s. The temperature of the Bose-condensation with the effective mass taken into consideration is estimated as 1.99 K.

Comments: 5 pages, 1 figure

Journal: Fizika Nizkikh Temperatur 29, No. 2, 145-148 (2003); Low Temp. Phys. 29, 105-107 (2003)

DOI: 10.1063/1.1542407

Categories: cond-mat.stat-mech

Keywords: effective mass, excitation spectrum, two-time temperature green functions formalism, random phase approximation, satisfactory agreement

Tags: journal article

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