3 research outputs found
Domain wall suppression in trapped mixtures of Bose-Einstein condensates
The ground state energy of a binary mixture of Bose-Einstein condensates can
be estimated for large atomic samples by making use of suitably regularized
Thomas-Fermi density profiles. By exploiting a variational method on the trial
densities the energy can be computed by explicitly taking into account the
normalization condition. This yields analytical results and provides the basis
for further improvement of the approximation. As a case study, we consider a
binary mixture of Rb atoms in two different hyperfine states in a double
well potential and discuss the energy crossing between density profiles with
different numbers of domain walls, as the number of particles and the
inter-species interaction vary.Comment: 9 page
Binary mixtures of condensates in generic confining potentials
We study a binary mixture of Bose-Einstein condensates, confined in a generic
potential, in the Thomas-Fermi approximation. We search for the
zero-temperature ground state of the system, both in the case of fixed numbers
of particles and fixed chemical potentials.Comment: 20 pages, 2 figure
Vortex Waves in a Cloud of Bose Einstein - Condensed, Trapped Alkali - Metal Atoms
We consider the vortex state solution for a rotating cloud of trapped, Bose
Einstein - condensed alkali atoms and study finite temperature effects. We find
that thermally excited vortex waves can distort the vortex state significantly,
even at the very low temperatures relevant to the experiments.Comment: to appear in Phys. Rev.