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Abstract:
Superfluid 3He confined in aerogel offers a unique chance to study
the effects of a short mean
free path on the properties of a well defined superfluid Fermi liquid with
anisotropic pairing. Transport coefficients and collective excitations,
e.g. longitudinal sound, are expected to react sensitively to a short mean
free path and to offer the possibility for testing recently developed models
for quasiparticle scattering at aerogel strands. Sound experiments, together
with a theoretical analysis based on Fermi liquid theory for systems with
short mean free paths, should give valuable insights into the interaction
between superfluid 3He and aerogel.
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