When liquid 4He is cooled below 2.176 K, it undergoes a phase transition—Bose–Einstein
condensation—and becomes a superfluid with zero viscosity. Once in such a state, it can …

This review paper puts together some results concerning non equilibrium thermodynamics
and heat transport properties of superfluid He II. A one-fluid extended model of superfluid …

Only a few metallic phases have been identified in pure crystalline materials. These include
normal, ferromagnetic and antiferromagnetic metals, systems with spin and charge density …

We derive a hydrodynamic theory of the long-wavelength excitations of helium films
adsorbed in cylindrical pores and on planar substrates. In the case of cylindrical geometry …

The temperature variation of the superfluid density has been measured for He 4 films
adsorbed on porous Vycor glass. Films with transition temperatures ranging from 0.1 to 1.5 K …

We study how temperature affects the lifetime of a quantized, persistent current state in a
toroidal Bose-Einstein condensate. When the temperature is increased, we find a decrease …

We have studied the superfluid density of thin superfluid He 4 films absorbed in porous
Vycor glass. At low temperatures we have used a third-sound technique to examine the …

Superfluid He 4 is interesting acoustically because it can support more than one mode of
sound propagation, and these can be used to study critical properties. Recently, there has …

A multiple-scattering model which previously explained the conducting properties of fluid-
saturated porous fused glass beads is applied to the acoustic index of refraction n of an …

Das Buch bietet eine kompakte Zusammenstellung der wichtigsten Phänomene in der
Tieftemperaturphysik, die sowohl Studenten (mit dieser Vertiefungsrichtung im …