TY - JOUR T1 - Steady-state many-body entanglement of hot reactive fermions JF - Physical Review Letters Y1 - 2012 A1 - Michael Foss-Feig A1 - Andrew J. Daley A1 - James K. Thompson A1 - Ana Maria Rey AB - Entanglement is typically created via systematic intervention in the time evolution of an initially unentangled state, which can be achieved by coherent control, carefully tailored non-demolition measurements, or dissipation in the presence of properly engineered reservoirs. In this paper we show that two-component Fermi gases at ~\mu K temperatures naturally evolve, in the presence of reactive two-body collisions, into states with highly entangled (Dicke-type) spin wavefunctions. The entanglement is a steady-state property that emerges---without any intervention---from uncorrelated initial states, and could be used to improve the accuracy of spectroscopy in experiments with fermionic alkaline earth atoms or fermionic groundstate molecules. VL - 109 UR - http://arxiv.org/abs/1207.4741v1 CP - 23 J1 - Phys. Rev. Lett. U5 - 10.1103/PhysRevLett.109.230501 ER -