Fidelity decay and entropy production in many-particle systems after random interaction quench
Fidelity decay and entropy production in many-particle systems after random interaction quench
We analyze the effect of spin degree of freedom on fidelity decay and entropy production of a many-particle fermionic (bosonic) system in a mean-field, quenched by a random two-body interaction preserving many-particle spin S. The system Hamiltonian is represented by embedded Gaussian orthogonal ensemble (EGOE) of random matrices (for time-reversal …