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Breathing mode in two-dimensional binary self-bound Bose-gas droplets

Stürmer, P. LU ; Tengstrand, M. Nilsson LU ; Sachdeva, R. LU orcid and Reimann, S. M. LU (2021) In Physical Review A 103(5).
Abstract

In this work, we study the stationary structures and the breathing mode behavior of a two-dimensional self-bound binary Bose droplet. We employ an analytical approach using a variational ansatz with a super-Gaussian trial order parameter and compare it with the numerical solutions of the extended Gross-Pitaevskii equation. We find that the super-Gaussian is superior to the often used Gaussian ansatz in describing the stationary and dynamical properties of the system. For sufficiently large nonrotating droplets the breathing mode is energetically favorable compared to the self-evaporating process. However, for small self-bound systems our results differ based on the ansatz. Inducing angular momentum by imprinting multiply quantized... (More)

In this work, we study the stationary structures and the breathing mode behavior of a two-dimensional self-bound binary Bose droplet. We employ an analytical approach using a variational ansatz with a super-Gaussian trial order parameter and compare it with the numerical solutions of the extended Gross-Pitaevskii equation. We find that the super-Gaussian is superior to the often used Gaussian ansatz in describing the stationary and dynamical properties of the system. For sufficiently large nonrotating droplets the breathing mode is energetically favorable compared to the self-evaporating process. However, for small self-bound systems our results differ based on the ansatz. Inducing angular momentum by imprinting multiply quantized vortices at the droplet center, this preference for the breathing mode persists independent of the norm.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A
volume
103
issue
5
article number
053302
publisher
American Physical Society
external identifiers
  • scopus:85105667876
ISSN
2469-9926
DOI
10.1103/PhysRevA.103.053302
language
English
LU publication?
yes
id
dd9cd428-7635-4017-b009-9bf64726bf2d
date added to LUP
2021-06-03 15:24:26
date last changed
2023-11-08 15:03:17
@article{dd9cd428-7635-4017-b009-9bf64726bf2d,
  abstract     = {{<p>In this work, we study the stationary structures and the breathing mode behavior of a two-dimensional self-bound binary Bose droplet. We employ an analytical approach using a variational ansatz with a super-Gaussian trial order parameter and compare it with the numerical solutions of the extended Gross-Pitaevskii equation. We find that the super-Gaussian is superior to the often used Gaussian ansatz in describing the stationary and dynamical properties of the system. For sufficiently large nonrotating droplets the breathing mode is energetically favorable compared to the self-evaporating process. However, for small self-bound systems our results differ based on the ansatz. Inducing angular momentum by imprinting multiply quantized vortices at the droplet center, this preference for the breathing mode persists independent of the norm.</p>}},
  author       = {{Stürmer, P. and Tengstrand, M. Nilsson and Sachdeva, R. and Reimann, S. M.}},
  issn         = {{2469-9926}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review A}},
  title        = {{Breathing mode in two-dimensional binary self-bound Bose-gas droplets}},
  url          = {{http://dx.doi.org/10.1103/PhysRevA.103.053302}},
  doi          = {{10.1103/PhysRevA.103.053302}},
  volume       = {{103}},
  year         = {{2021}},
}