[institut] Podsetnik, danas je SCL seminar: Dipolar BECs in anisotropic disorder, Antun Balaz, petak 7. jun u 14:00

[Nenad Vukmirovic]

Postovane koleginice i kolege,

Podsecam vas da ce se danas odrzati dole najavljeni seminar.

Srdacan pozdrav,

Dr Nenad Vukmirovic,
Visi naucni saradnik,
Laboratorija za primenu racunara u nauci,
Institut za fiziku Beograd,
Srbija.
URL: http://www.scl.rs/nenad

On 06/04/2013 10:54 AM, Nenad Vukmirović wrote:
> Postovane koleginice i kolege,
>
> Pozivam vas na SCL seminar koji ce u petak 7. juna 2013. godine u 14:00
> u citaonici Instituta za fiziku odrzati Antun Balaz (SCL, Institut za
> fiziku u Beogradu). Naslov seminara i apstrakt su dati u nastavku ove
> poruke.
>
>
> Dipolar Bose-Einstein condensates in a weak anisotropic disorder
>
> Abstract:
>
> In this talk we will study properties of a homogeneous dipolar
> Bose-Einstein condensate in a weak anisotropic random potential with
> Lorentzian correlation at zero temperature. We will solve perturbatively
> the Gross-Pitaevskii equation to second order in the random potential
> strength and obtain analytic results for the disorder ensemble averages
> of both the condensate and the superfluid depletion, the equation of
> state,  and the sound velocity. For a pure contact interaction and a
> vanishing correlation length, we will reproduce the seminal results of
> Huang and Meng, which were originally derived within a Bogoliubov theory
> around a disorder-averaged background field. For dipolar interaction and
> isotropic Lorentzian-correlated disorder, the obtained results are
> qualitatively similar to the case of an isotropic Gaussian-correlated
> disorder. In the case of an anisotropic disorder, the physical
> observables show characteristic anisotropies which arise from the
> formation of fragmented dipolar condensates in the local minima of the
> disorder potential.
>
> Srdacan pozdrav,
>