Inhaltszusammenfassung

We demonstrate that quantum fluctuations suppress Bose-Einstein condensation of quasi-two-dimensional bosons in a rapidly rotating trap. our conclusions rest in part on the derivation of an exact expression for the boson action in terms of vortex position coordinates, and in part on a solution of the weakly interacting boson bogoliubov equations, which simplify in the rapid-rotation limit. we obtain analytic expressions for the collective-excitation dispersion, which is quadratic rather than ...We demonstrate that quantum fluctuations suppress Bose-Einstein condensation of quasi-two-dimensional bosons in a rapidly rotating trap. our conclusions rest in part on the derivation of an exact expression for the boson action in terms of vortex position coordinates, and in part on a solution of the weakly interacting boson bogoliubov equations, which simplify in the rapid-rotation limit. we obtain analytic expressions for the collective-excitation dispersion, which is quadratic rather than linear. our estimates for the boson filling factor at which the vortex lattice melts are consistent with recent exact-diagonalization calculations.» weiterlesen» einklappen

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Klassifikation

DFG Fachgebiet:
3.17 - Theoretische Chemie

DDC Sachgruppe:
Physik