2003/06/30 by Nicholas Whitlock, Isabelle Bouchoule · 1 citation
Physics and Astronomy · #cond-mat.soft
paper · pdf · doi:10.1103/physreva.68.053609
published as Phys. Rev. A 68, 053609 (2003) · 5 pages, accepted to Phys. Rev. A
arxiv created 2003/09/17 · arxiv updated 2010/11/19
We study the relative phase fluctuations of two one-dimensional condensates coupled along their whole extension with a local single-atom interaction. The thermal equilibrium is defined by the competition between independent longitudinal thermally excited phase fluctuations and the coupling between the condensates which locally favors identical phase. We compute the relative phase fluctuations and their correlation length as a function of the temperature and the strength of the coupling.