Academic Journal
Higher-harmonic collective modes in a trapped gas from second-order hydrodynamics
| العنوان: | Higher-harmonic collective modes in a trapped gas from second-order hydrodynamics |
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| المؤلفون: | W E Lewis, P Romatschke |
| المصدر: | New Journal of Physics, Vol 19, Iss 2, p 023042 (2017) |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2017 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | collective oscillations, second-order hydrodynamics, atomic physics, transport properties, strongly interacting Fermi gases, Science, Physics, QC1-999 |
| الوصف: | 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. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1367-2630 |
| Relation: | https://doi.org/10.1088/1367-2630/aa5d6a; https://doaj.org/toc/1367-2630; https://doaj.org/article/76f0d86c635e445287e90f710cd33c84 |
| DOI: | 10.1088/1367-2630/aa5d6a |
| الاتاحة: | https://doi.org/10.1088/1367-2630/aa5d6a https://doaj.org/article/76f0d86c635e445287e90f710cd33c84 |
| رقم الانضمام: | edsbas.F229F77E |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 13672630 |
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| DOI: | 10.1088/1367-2630/aa5d6a |