Two-atomic potential and distortion of excitation spectrum of liquid He-4 by admixture of He-3

A. I. Kirillov (Moscow Power Engineering Institute); D. B. Baranov; V. S. Yarunin (Joint Institute for Nuclear Research)

arxiv: cond-mat/0112055 · v2 · submitted 2001-12-04 · ❄️ cond-mat.stat-mech

Two-atomic potential and distortion of excitation spectrum of liquid He-4 by admixture of He-3

D. B. Baranov , V. S. Yarunin (Joint Institute for Nuclear Research) , A. I. Kirillov (Moscow Power Engineering Institute) This is my paper

classification ❄️ cond-mat.stat-mech

keywords admixturehe-3he-4liquidpotentialspectrumtunnellingatoms

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The new interatomic potential g(r), providing the tunnelling of atoms, is suggested for calculating HFB phonon-roton spectrum E(p) of liquid He-4. The tunnelling enables the calculations to reproduce the experimental dependence of shifts E(p) on pressure P induced by He-3 admixture in the constant total density and volume.

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Two-atomic potential and distortion of excitation spectrum of liquid He-4 by admixture of He-3

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