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Strong-coupling effects in 'dirty' superfluid 3He

G Baramidze and G Kharadze

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The contribution of the strong-coupling effects to the free energy of the 'dirty' superfluid 3He is estimated using a simple model. It is shown that the strong-coupling effects are less susceptible to quasiparticle scattering events in comparison to the weak-coupling counterpart. This supports the conclusion of stabilization of the B-phase in the aerogel environment at pressures where the A-phase is favoured in bulk superfluid 3He, in accordance with recent experimental observations in zero magnetic field.


PACS

67.30.H- Superfluid phase of 3He

67.30.hm Impurities

Subjects

Quantum gases, liquids and solids

Dates

Issue 32 (19 August 2002)

Received 23 November 2001, in final form 5 July 2002

Published 2 August 2002



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