Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2002-01-29
Phys.Rev.Lett. 89, 190405 (2002)
Physics
Condensed Matter
Soft Condensed Matter
5 pages, revtex, 1 figures
Scientific paper
10.1103/PhysRevLett.89.190405
We consider the hydrodynamic modes for dense trapped ultracold gases, where the interparticle distance is comparable to the scattering length. We show that the experimental determination of the hydrodynamic mode frequencies allows to obtain quite directly the equation of state of a dense gas. As an example we investigate the case of two equal fermionic populations in different hyperfine states with attractive interaction and in particular the vicinity of the collapse.
Combescot Roland
Leyronas Xavier
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