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Transport in ultradilute solutions of He in superfluid He
Gordon Baym, D. H. Beck, C. J. Pethick
We calculate the effect of a heat current on transporting He dissolved in superfluid He at ultralow concentration, as will be utilized in a proposed experimental search for…
Transport in very dilute solutions of He in superfluid He
Gordon Baym, D. H. Beck, C. J. Pethick
Motivated by a proposed experimental search for the electric dipole moment of the neutron (nEDM) utilizing neutron-He capture in a dilute solution of He in superfluid …
Bose-Einstein condensation temperature of a gas of weakly dissociated diatomic molecules
L. M. Jensen, H. Mäkelä, C. J. Pethick
We consider the properties of a gas of bosonic diatomic molecules in the limit when few of the molecules are dissociated. Taking into account the effects of dissociation and scatte…
Energy-dependent effective interactions for dilute many-body systems
A. Collin, P. Massignan, C. J. Pethick
We address the issue of determining an effective two-body interaction for mean-field calculations of energies of many-body systems. We show that the effective interaction is propor…
Structure of vortices in rotating Bose-Einstein condensates
Gentaro Watanabe, S. Andrew Gifford, Gordon Baym +1
We calculate the structure of individual vortices in rotating Bose-Einstein condensates in a transverse harmonic trap. Making a Wigner-Seitz approximation for the unit cell of the…
Velocity of vortices in inhomogeneous Bose-Einstein condensates
Halvor M. Nilsen, Gordon Baym, C. J. Pethick
We derive, from the Gross-Pitaevskii equation, an exact expression for the velocity of any vortex in a Bose-Einstein condensate, in equilibrium or not, in terms of the condensate w…