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We re-examine the calculation of the transverse spin-diffusion coefficient in a dilute degenerate spin-polarized Fermi gas, for the case of s-wave scattering. The special feature of this limit is that the dependence of the spin diffusion coefficient on temperature and field can be calculated...
The effect of ring vortices on the destabilization of supersaturated liquid helium mixtures at very low temperatures is investigated as a function of pressure. We have found that large ring vortices trigger the segregation of
He at smaller values of the concentration than small ring vortices....
We measured the interfacial tension of
He mixtures at several pressures up to 21 atm down to 0.18 K as well as the number densities of the
He-rich liquids at the phase-separation line. The interfacial tension was proportional to T2
up to about 0.4 K without respect to...
The electronic band structure and the total energy of SrX (X=S, Se, Te) in NaCl-type and CsCl-type structures were studied using the tight binding linear muffin-tin orbital method. The calculated ground state properties such as lattice constant and bulk modulus are in agreement with the...
It is well established that the single molecule ortho-para states of hydrogen remain valid in the low pressure solid. In this paper we show that on theoretical grounds the concept of ortho-para states for the molecules in a solid should remain valid to megabar pressures and probably until the...
An inhomogeneous superconducting ring (hollow cylinder) placed in a magnetic field is considered. It is shown that the superconducting transition of the section with the lowest critical temperature may be a first order phase transition if the magnetic flux contained within the ring is not...
The dynamic structure factor S(q, ω) for a model of superfluid
He in disorder is evaluated using Path Integral Monte Carlo and Maximum Entropy methods. Disorder is represented by randomly distributed static impurities interacting with the
He atoms via a simple attractive potential. The...
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