Article

 

Higher-harmonic collective modes in a trapped gas from second-order hydrodynamics Público Deposited

https://scholar.colorado.edu/concern/articles/3197xm683
Abstract
  • Utilizing a second-order hydrodynamics formalism, the dispersion relations for the frequencies and damping rates of collective oscillations as well as spatial structure of these modes up to the decapole oscillation in both two- and three- dimensional gas geometries are calculated. In addition to higher-order modes, the formalism also gives rise to purely damped 'non-hydrodynamic' modes. We calculate the amplitude of the various modes for both symmetric and asymmetric trap quenches, finding excellent agreement with an exact quantum mechanical calculation. We find that higher-order hydrodynamic modes are more sensitive to the value of shear viscosity, which may be of interest for the precision extraction of transport coefficients in Fermi gas systems.

Creator
Date Issued
  • 2017-02-21
Academic Affiliation
Journal Title
Journal Issue/Number
  • 2
Journal Volume
  • 19
File Extent
  • 023042
Subject
Última modificação
  • 2020-01-08
Resource Type
Declaração de direitos
DOI
ISSN
  • 1367-2630
Language

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