Publications in Scientific Journals:
I. Mazets, H.-J. Schmiedmayer:
"Dephasing in two decoupled one-dimensional Bose-Einstein condensates and the subexponential decay of the interwell coherence";
European Physical Journal B,
68
(2009),
335
- 339.
English abstract:
We provide a simple physical picture of the loss of coherence between two coherently split one-dimensional Bose-Einstein condensates. The source of the dephasing is identified with nonlinear corrections to the elementary excitation energies in either of the two independent condensates. We retrieve the result by Burkov, Lukin and Demler [Phys. Rev. Lett. 98, 200404 (2007)] on the subexponential decay of the coherence α exp[-(t/t0)2/3] for the large time t, however, the scaling of t0 differs.
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1140/epjb/e2008-00421-5
Electronic version of the publication:
http://publik.tuwien.ac.at/files/PubDat_176325.pdf