Quantum matter breakthrough: Tuning density waves

https://phys.org/news/2023-05-quantum-breakthrough-tuning-density.html

"doubles interactions between atoms of cold unitary Fermi gas... placed in optical cavity to confine light in small space... Optical cavities 2 facing mirrors reflect incoming light back and forth 1,000sX allowing light particles, photons build up inside cavity... cavity causes particles interact long distance: first atom emit photon bounces onto mirrors, reabsorbed by 2nd regardless how far from 1st, when enough photons emitted and reabsorbed, atoms collectively organize into density wave pattern"