Collective modes of a one-dimensional trapped atomic Bose gas at finite temperatures
Collective modes of a one-dimensional trapped atomic Bose gas at finite temperatures
We theoretically investigate collective modes of a one-dimensional (1D) interacting Bose gas in a harmonic tras at finite temperatures, by using a variational approach and the local density approximation. We find that the temperature dependence of collective mode frequencies is notably different in the weakly and strongly interacting regimes. Therefore, …