Lee-Huang-Yang effects in the ultracold mixture of and with attractive interspecies interactions
Open Access
- 14 September 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Research
- Vol. 3 (3), 033247
- https://doi.org/10.1103/physrevresearch.3.033247
Abstract
The beyond-mean-field Lee-Huang-Yang (LHY) correction is ubiquitous in dilute ultracold quantum gases. However, its effects are often elusive due to the typically much larger influence of the mean-field (MF) energy. In this work, we study an ultracold mixture of and with tunable attractive interspecies interactions. The LHY effects manifest in the formation of self-bound quantum liquid droplets and the expansion dynamics of the gas-phase sample. A liquid-to-gas-phase diagram is obtained by measuring the critical atom numbers below which the self-bound behavior disappears. In stark contrast to trapped gas-phase condensates, the gas-phase mixture formed following the liquid-to-gas-phase transition shows an anomalous expansion featuring a larger release energy for increasing MF attractions.
Keywords
Funding Information
- Engineering and Physical Sciences Research Council (EP/P01058X/1)
- National Basic Research Program of China (2018YFA0307600, 2016YFA0300603)
- National Natural Science Foundation of China (12074419)
This publication has 48 references indexed in Scilit:
- Observation of Feshbach resonances between ultracold Na and Rb atomsPhysical Review A, 2013
- The Equation of State of a Low-Temperature Fermi Gas with Tunable InteractionsScience, 2010
- Bragg Spectroscopy of a Strongly InteractingBose-Einstein CondensatePhysical Review Letters, 2008
- Realization of a Strongly Interacting Bose-Fermi Mixture from a Two-Component Fermi GasPhysical Review Letters, 2008
- Interisotope Determination of Ultracold Rubidium Interactions from Three High-Precision ExperimentsPhysical Review Letters, 2002
- Optical Confinement of a Bose-Einstein CondensatePhysical Review Letters, 1998
- Coherence, Correlations, and Collisions: What One Learns about Bose-Einstein Condensates from Their DecayPhysical Review Letters, 1997
- Emergence of Interaction Effects in Bose-Einstein CondensationPhysical Review Letters, 1997
- Bose-Einstein Condensation in a Tightly Confining dc Magnetic TrapPhysical Review Letters, 1996
- Eigenvalues and Eigenfunctions of a Bose System of Hard Spheres and Its Low-Temperature PropertiesPhysical Review B, 1957