Related Experiment Video
Updated: Jan 20, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Cluster Formation in Two-Component Fermi Gases
X Y Yin1, Hui Hu1, Xia-Ji Liu1
1Centre for Quantum and Optical Science, Swinburne University of Technology, Melbourne, Victoria 3122, Australia.
Abstract:
Two-component fermions are known to behave like a gas of molecules in the limit of Bose-Einstein condensation of diatomic pairs tightly bound with zero-range interactions. We discover that the formation of cluster states occurs when the effective range of two-body interaction exceeds roughly 0.46 times the scattering length, regardless of the details of the short-range interaction. Using an explicitly correlated Gaussian basis set expansion approach, we calculate the binding energy of cluster states in trapped few-body systems and show the difference of structural properties between cluster states and gaslike states. We identify the condition for cluster formation and discuss the potential observation of cluster states in experiments.
More Related Videos
Related Concept Videos
Noble Gases
The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
11:21Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Fermi Level
At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...
Solution Formation
This selective...
Molecular Comparison of Gases, Liquids, and Solids
Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions