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arXiv · cond-mat/0212277

Finite-size effects on the thermal conductivity of ^4He near T_λ

Michael Toepler·Volker Dohm
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Abstract

We present results of a renormalization-group calculation of the thermal conductivity of confined $\rm^4$He in a $L^2 \times \infty$ geometry above and at $T_λ$ within model F with Dirichlet boundary conditions for the order parameter. We assume a heat flow parallel to the boundaries which implies Neumann boundary conditions for the entropy density. No adjustable parameters other than those known from bulk theory and static finite-size theory are used. Our theoretical results are compared with experimental data by Kahn and Ahlers.

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Michael Toepler, Volker Dohm. 2002-12-12. Finite-size effects on the thermal conductivity of ^4He near T_λ. https://doi.org/10.1016/s0921-4526(02)01956-7

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