Diffusive thermal conductivity of superfluid³He-A at low temperatures

Abstract

The components of the diffusive thermal tensor of superfluid 3He-A are calculated by using approximate collision integrals at low temperatures. The energy and temperature dependence of the quasi-particle relaxation time are obtained. The parameter lambda 1 plays an important role in determining the temperature dependence of the diffusive thermal conductivity coefficients.

Shear viscosity of superfluid 3He–A1 at low temperatures

“…and the other transition probabilities have nearly zero value. It is noted that only binary processes are dominated at low temperatures, and this is also the case for calculating the thermal diffusion coefficient of the A-phase at low temperatures [24].…”

Shear viscosity of p-wave superfluid Fermi gas with weak interaction at low temperatures

“…( 28) and ( 29) is λ 2 1 /16 for both cases. For obtaining λ 2sσ and B σ , we note that θ is small for the neutral superfluid case and its maximum value is θ m = πT /∆(0) [22], where maximum gap, ∆(0), for fermion gas is equal to 1.76T c at low temperatures [23]. Finally, we obtain…”

Transport Properties of Superfluid Dipolar Fermi Gas at Low Temperatures

“…b) 3 He-A 1 have two kind of the quasiparticles, one for Bogoliubov quasiparticle, and another for normal quasiparticle. The wave function of the system in A 1 phases of Also, in [15] the components of thermal conductivity tensor of superfluid 3 He-A were calculated using approximate collision integrals at low temperatures, and the thermal coefficients K ⊥ and K have been obtained with temperature dependences 1 T − and T , respectively. This is due to the fact that 1 λ − W ↑↑ contributed to calculation and only ↑↑ interacted with Bogoliubov quasiparticles.…”

“…By solving the even part of t in (15) and with regard to the fact that system is polarized, we have [24], ( ) λ ↑ and B ↑ , we used (6) and note that θ is small for superfluid case and its maximum value is ( ) π 0 T ∆ [20], where maximum gap, ( ) 0 ∆ , due to strong coupling effects is equal to 1.76 c T [25]. Then, we obtained:…”

“…They obtained that the elements of the shear viscosities [14]. Shahzamanian [15] calculated the components of the diffusive thermal conductivity of superfluid 3 He-A using approximate collision integrals at low temperatures. The results are…”