Metastability of persistent currents in trapped gases of atoms

Kimmo Kärkkäinen; Jonas Cremon; Gilbert Reinisch; Georgios Kavoulakis; Stephanie Reimann

doi:10.1103/PhysRevA.76.043627

Metastability of persistent currents in trapped gases of atoms

Kimmo Kärkkäinen, Jonas Cremon, Gilbert Reinisch, Georgios Kavoulakis, Stephanie Reimann

Mathematical Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We examine the conditions that give rise to metastable, persistent currents in a trapped Bose-Einstein condensate. A necessary condition for the stability of persistent currents is that the trapping potential is not a monotonically increasing function of the distance from the trap center. Persistent currents also require that the interatomic interactions are sufficiently strong and repulsive. Finally, any off-center vortex state is shown to be unstable, while a driven gas shows hysteresis.

Original language	English
Pages (from-to)	043627-043633
Journal	Physical Review A
Volume	76
DOIs	https://doi.org/10.1103/PhysRevA.76.043627
Publication status	Published - 2007

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)

Subject classification (UKÄ)

Physical Sciences

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10.1103/PhysRevA.76.043627

Cite this

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title = "Metastability of persistent currents in trapped gases of atoms",

abstract = "We examine the conditions that give rise to metastable, persistent currents in a trapped Bose-Einstein condensate. A necessary condition for the stability of persistent currents is that the trapping potential is not a monotonically increasing function of the distance from the trap center. Persistent currents also require that the interatomic interactions are sufficiently strong and repulsive. Finally, any off-center vortex state is shown to be unstable, while a driven gas shows hysteresis.",

author = "Kimmo K{\"a}rkk{\"a}inen and Jonas Cremon and Gilbert Reinisch and Georgios Kavoulakis and Stephanie Reimann",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)",

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T1 - Metastability of persistent currents in trapped gases of atoms

AU - Kärkkäinen, Kimmo

AU - Cremon, Jonas

AU - Reinisch, Gilbert

AU - Kavoulakis, Georgios

AU - Reimann, Stephanie

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)

PY - 2007

Y1 - 2007

N2 - We examine the conditions that give rise to metastable, persistent currents in a trapped Bose-Einstein condensate. A necessary condition for the stability of persistent currents is that the trapping potential is not a monotonically increasing function of the distance from the trap center. Persistent currents also require that the interatomic interactions are sufficiently strong and repulsive. Finally, any off-center vortex state is shown to be unstable, while a driven gas shows hysteresis.

AB - We examine the conditions that give rise to metastable, persistent currents in a trapped Bose-Einstein condensate. A necessary condition for the stability of persistent currents is that the trapping potential is not a monotonically increasing function of the distance from the trap center. Persistent currents also require that the interatomic interactions are sufficiently strong and repulsive. Finally, any off-center vortex state is shown to be unstable, while a driven gas shows hysteresis.

U2 - 10.1103/PhysRevA.76.043627

DO - 10.1103/PhysRevA.76.043627

M3 - Article

SN - 1094-1622

SN - 2469-9934

VL - 76

SP - 43627

EP - 43633

JO - Physical Review A

JF - Physical Review A

ER -

Metastability of persistent currents in trapped gases of atoms

Abstract

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