Vortices in Bose-Einstein condensates with $\mathcal{PT}$-symmetric gain and loss

Lukas Schwarz; Holger Cartarius; Ziad H. Musslimani; Jörg Main; Günter Wunner

doi:10.1103/PhysRevA.95.053613

Vortices in Bose-Einstein condensates with $\mathcal{PT}$-symmetric gain and loss

Quantum Physics 2017-05-16 v2 Quantum Gases Chaotic Dynamics

Authors: Lukas Schwarz , Holger Cartarius , Ziad H. Musslimani , Jörg Main , Günter Wunner

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Abstract

We investigate vortex excitations in dilute Bose-Einstein condensates in the presence of complex $\mathcal{PT}$ -symmetric potentials. These complex potentials are used to describe a balanced gain and loss of particles and allow for an easier calculation of stationary states in open systems than in a full dynamical calculation including the whole environment. We examine the conditions under which stationary vortex states can exist and consider transitions from vortex to non-vortex states. In addition, we study the influences of $\mathcal{PT}$ symmetry on the dynamics of non-stationary vortex states placed at off-center positions.

Keywords

Bose-Einstein condensates PT-symmetric potentials vortices stationary states gain and loss non-stationary dynamics

Cite

@article{arxiv.1702.03846,
  title  = {Vortices in Bose-Einstein condensates with $\mathcal{PT}$-symmetric gain and loss},
  author = {Lukas Schwarz and Holger Cartarius and Ziad H. Musslimani and Jörg Main and Günter Wunner},
  journal= {arXiv preprint arXiv:1702.03846},
  year   = {2017}
}

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10 pages, 10 figures, one additional discussion with a new figure, additional references

Vortices in Bose-Einstein condensates with $\mathcal{PT}$-symmetric gain and loss

Abstract

Keywords

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