Emergence of multi-body interactions in a fermionic lattice clock

Emergence of multi-body interactions in a fermionic lattice clock

Emergence of multi-body interactions in a fermionic lattice clock, Published online: 31 October 2018; doi:10.1038/s41586-018-0661-6

Clock spectroscopy of ultracold strontium atoms in a three-dimensional optical lattice is used to observe the onset of multi-body interactions that result from the underlying pairwise interactions between atoms.