Collective Excitations and Nonequilibrium Phase Transition in Dissipative Fermionic Superfluids
Collective Excitations and Nonequilibrium Phase Transition in Dissipative Fermionic Superfluids
We predict a new mechanism to induce collective excitations and a nonequilibrium phase transition of fermionic superfluids via a sudden switch on of two-body loss, for which we extend the BCS theory to fully incorporate a change in particle number. We find that a sudden switch on of dissipation induces …