Self-bound Bose mixtures

Beschreibung

Ultracold quantum gases usually require a trapping potential to hold the cloud of atoms together. An exception is the case of dipolar quantum gases which can form self-bound droplets, but recent experiments [\ref{cabreraScience17},\ref{semeghini}] found that also binary Bose mixtures can form such self-bound ultra-dilute liquid droplets. These experiments confirmed beyond-mean-fiel d (BMF) predictions [\ref{petrovPRL15},\ref{petrovPRL16}] which used Lee-Huang-Yang corrections in the local density approximation [\ref{larsenAnnPhys63}], see also Ref.[\ref{cikojevicPRB18}]. In our work, we proceed beyond the beyond-mean-field approximation, and study liquid Bose mixtures of $^{39}$K using a variational {\em pair density} functional theory, the hypernetted-chain Euler Lagrange (HNC-EL) method. The HNC-EL methods accounts for correlations non-perturbatively by using a multi-component Jastrow-Feenberg ansatz [\ref{hebenstreitPRA16}]. We focus on the case of a mixture of uniform density, as it would be realized inside large saturated droplets.

Zeitraum	25 Juli 2018
Ereignistitel	26th International Conference on Atomic Physics
Veranstaltungstyp	Konferenz
Ort	SpanienAuf Karte anzeigen