Heiselberg H
Danish Defense Research Establishment, Ryvangsalle' 1, 2100 Copenhagen Ø, Denmark.
Phys Rev Lett. 2004 Jul 23;93(4):040402. doi: 10.1103/PhysRevLett.93.040402.
The collective mode frequencies in isotropic and deformed traps are calculated for general polytropic equation of states, P proportional n(gamma+1), and expressed in terms of gamma and the trap geometry. For molecular and standard Bose-Einstein condensates and Fermi gases near Feshbach resonances, the effective power gamma approximately 0.5-1.3 is calculated from Jastrow type wave-function ansatz, and from the crossover model of Leggett. The resulting mode frequencies are calculated for these phases around the BEC-BCS crossover.
