Mapping out the quasi-condensate transition through the 1D-3D dimensional crossoverReportar como inadecuado




Mapping out the quasi-condensate transition through the 1D-3D dimensional crossover - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1 laboratoire Charles Fabry de l-Institut d-Optique - Optique atomique LCFIO - Laboratoire Charles Fabry de l-Institut d-Optique 2 ARC Centre of Excellence for Quantum-atom Optics

Abstract : By measuring the density fluctuations in a highly elongated weakly interacting Bose gas, we observe and quantify the transition from the ideal gas to a quasi-condensate regime throughout the dimensional crossover from a purely 1D to an almost 3D gas. We show that that the entire transition region and the dimensional crossover are described surprisingly well by the modified Yang-Yang model. Furthermore, we find that at low temperatures the linear density at the quasi-condensate transition scales according to an interaction-driven scenario of a longitudinally uniform 1D Bose gas, whereas at high temperatures it scales according to the degeneracy-driven critical scenario of transverse condensation of a 3D ideal gas.





Autor: Julien Armijo - Thibaut Jacqmin - Karen Kheruntsyan - Isabelle Bouchoule -

Fuente: https://hal.archives-ouvertes.fr/



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