Transport and relaxation properties of superfluid3He. I. Kinetic equation and Bogoliubov quasiparticle relaxation rate
✍ Scribed by D. Einzel; P. Wölfle
- Publisher
- Springer US
- Year
- 1978
- Tongue
- English
- Weight
- 657 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0022-2291
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✦ Synopsis
The kinetic equation for Bogoliubov quasiparticles for both the A and B phases of superfluid 3He is derived from the general matrix kinetic equation. A condensed expression for the exact spin-symmetric collision integral is given. The quasiparticle relaxation rate is calculated for the BW state using the s-p approximation for the quasiparticle scattering amplitude. By using the results for the quasiparticle relaxation rate, the mean free path of Bogoliubov quasiparticles is calculated for all temperatures.
📜 SIMILAR VOLUMES
The kinetic equation for Bogoliubov quasiparticles is solved in a wellcontrolled approximation and the kinetic coefficients of shear viscosity, second viscosity, and thermal conductivity are calculated for all temperatures. The results are in good agreement with data on the shear viscosity. Finally,
A careful analysis of the assumptions and approximations underlying the derivation of the usual kinetic equation for a Rayleigh gas (or a Brownian particle) is performed, The passage from the exact Boltzmann collision operator to its approximate differential form is thus investigated. It is shown th