Observation of anomalous decay of a polarized three-component Fermi gas

Fermionic systems with multiple internal states, such as quarks in quantum chromodynamics and nucleons in nuclear matter, are at the heart of some of the most complex quantum many-body problems. The stability of such many-body multi-component systems is crucial to understanding, for instance, baryon formation and the nuclear structure, but these problems are typically challenging to tackle theoretically. Versatile experimental platforms on which to study analogous problems are thus sought-after. Here, we create a uniform three-component Fermi gas with controllable polarization, and observe anomalous decay of the polarized gas, in which the loss rates of each component unexpectedly differ, contradicting generic…

• NS
  National Science Foundation

  Awards: 1945324, PHY-2110303, PHY-1945324, 2110303
• AP
  Alfred P. Sloan Foundation
• YU
  Yale University
• DA
  Defense Advanced Research Projects Agency

  Award: W911NF2010090
• NS
  National Science Foundation Graduate Research Fellowship Program