Generic equilibration dynamics of planar defects in trapped atomic superfluids
Abstract
Here, we investigate equilibration processes shortly after sudden perturbations are applied to ultracold trapped superfluids. We show the similarity of phase imprinting and localized density depletion perturbations, both of which initially are found to produce “phase walls”. These planar defects are associated with a sharp gradient in the phase. Importantly they relax following a quite general sequence. Our studies, based on simulations of the complex time-dependent Ginzburg-Landau equation, address the challenge posed by these experiments: how a superfluid eventually eliminatesa spatially extended planar defect. The processes involved are necessarily more complex than equilibration involving simpler line vortices. An essential mechanism form relaxation involves repeated formation and loss of vortex rings near the trap edge.
- Authors:
-
- Univ. of Chicago, Chicago, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1360130
- Alternate Identifier(s):
- OSTI ID: 1179955
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review A - Atomic, Molecular, and Optical Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 3; Journal ID: ISSN 1050-2947
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Scherpelz, Peter, Padavić, Karmela, Murray, Andy, Glatz, Andreas, Aranson, Igor S., and Levin, K. Generic equilibration dynamics of planar defects in trapped atomic superfluids. United States: N. p., 2015.
Web. doi:10.1103/PhysRevA.91.033621.
Scherpelz, Peter, Padavić, Karmela, Murray, Andy, Glatz, Andreas, Aranson, Igor S., & Levin, K. Generic equilibration dynamics of planar defects in trapped atomic superfluids. United States. https://doi.org/10.1103/PhysRevA.91.033621
Scherpelz, Peter, Padavić, Karmela, Murray, Andy, Glatz, Andreas, Aranson, Igor S., and Levin, K. Wed .
"Generic equilibration dynamics of planar defects in trapped atomic superfluids". United States. https://doi.org/10.1103/PhysRevA.91.033621. https://www.osti.gov/servlets/purl/1360130.
@article{osti_1360130,
title = {Generic equilibration dynamics of planar defects in trapped atomic superfluids},
author = {Scherpelz, Peter and Padavić, Karmela and Murray, Andy and Glatz, Andreas and Aranson, Igor S. and Levin, K.},
abstractNote = {Here, we investigate equilibration processes shortly after sudden perturbations are applied to ultracold trapped superfluids. We show the similarity of phase imprinting and localized density depletion perturbations, both of which initially are found to produce “phase walls”. These planar defects are associated with a sharp gradient in the phase. Importantly they relax following a quite general sequence. Our studies, based on simulations of the complex time-dependent Ginzburg-Landau equation, address the challenge posed by these experiments: how a superfluid eventually eliminatesa spatially extended planar defect. The processes involved are necessarily more complex than equilibration involving simpler line vortices. An essential mechanism form relaxation involves repeated formation and loss of vortex rings near the trap edge.},
doi = {10.1103/PhysRevA.91.033621},
journal = {Physical Review A - Atomic, Molecular, and Optical Physics},
number = 3,
volume = 91,
place = {United States},
year = {Wed Mar 18 00:00:00 EDT 2015},
month = {Wed Mar 18 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
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