---
res:
  bibo_abstract:
  - We employ the Gross-Pitaevskii equation to study acoustic emission generated in
    a uniform Bose gas by a static impurity. The impurity excites a sound-wave packet,
    which propagates through the gas. We calculate the shape of this wave packet in
    the limit of long wave lengths, and argue that it is possible to extract properties
    of the impurity by observing this shape. We illustrate here this possibility for
    a Bose gas with a trapped impurity atom -- an example of a relevant experimental
    setup. Presented results are general for all one-dimensional systems described
    by the nonlinear Schrödinger equation and can also be used in nonatomic systems,
    e.g., to analyze light propagation in nonlinear optical media. Finally, we calculate
    the shape of the sound-wave packet for a three-dimensional Bose gas assuming a
    spherically symmetric perturbation.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Oleksandr
      foaf_name: Marchukov, Oleksandr
      foaf_surname: Marchukov
  - foaf_Person:
      foaf_givenName: Artem
      foaf_name: Volosniev, Artem
      foaf_surname: Volosniev
      foaf_workInfoHomepage: http://www.librecat.org/personId=37D278BC-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0003-0393-5525
  bibo_doi: 10.21468/scipostphys.10.2.025
  bibo_issue: '2'
  bibo_volume: 10
  dct_date: 2021^xs_gYear
  dct_identifier:
  - UT:000646783100027
  dct_isPartOf:
  - http://id.crossref.org/issn/2542-4653
  dct_language: eng
  dct_publisher: SciPost Foundation@
  dct_title: Shape of a sound wave in a weakly-perturbed Bose gas@
...