ELFT HÍRADÓ

[Janos Asboth <asboth.janos AT wigner.mta.hu>]

               MEGHÍVÓ

    Wigner FK SZFI Kvantumoptika és Kvantuminformatika Csoport szemináriuma


Kanász-Nagy Márton
(BME Egzotikus Kvantumfázisok Lendület Csoport):

Stabilizing the false vacuum: Mott skyrmions

abstract:

Topological excitations keep physicists fascinated since many decades.
While individual vortices and solitons have been observed in many areas of
physics, their most intriguing higher dimensional counterparts, skyrmions,
remained mostly elusive. In this talk, I will propose how a single stable
skyrmion can be created and investigated in a cold atomic experiment. By
loading a three-component nematic superfluid (such as 23Na) into a deep
optical lattice, and thereby creating a Mott insulating core, one can
imprint a topologically stable skyrmion configuration into the superfluid
shell surrounding it. I will also show how the spectrum of the excitations
of the superfluid and their quantum numbers change dramatically in the
presence of the skyrmion, due to the topological winding of the skyrmion
texture.

Reference: Márton Kanász-Nagy, Balázs Dóra, Eugene A. Demler, Gergely
Zaránd,   arXiv:1403.4242 [cond-mat.quant-gas]


Az előadás helye és ideje:
Wigner FK SZFI
Konkoly-Thege M. út 29-33., 1-es épület
Tanácsterem
2014. április 15. kedd, 13:00.

Minden érdeklődőt szeretettel várunk.

Asbóth János