THEORY OF SOUND-PROPAGATION IN SUPERFLUID HE3-A

被引：30

作者：

WOLFLE, P ^{[1
]}

KOCH, VE ^{[1
]}

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,D-8000 MUNICH 40,FED REP GER

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1978年 / 30卷 / 1-2期

关键词：

D O I：

10.1007/BF00115517

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The theory of sound propagation in pair-correlated Fermi liquids developed previously by Wölfle is applied to the Anderson-Brinkman-Morel state, believed to describe 3He -A. The effect of quasiparticle collisions is included. Expressions for the anisotropic sound absorption and velocity valid at arbitrary frequency, temperature, and pressure are derived in terms of averages in momentum space of certain simple functions. Numerical results are in good agreement with lower pressure data but deviate by 10-20% at the melting pressure. The discrepancies are attributed to strong coupling effects not included in the theory. © 1978 Plenum Publishing Corporation.

引用

页码：61 / 89

页数：29

共 21 条

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