Dissipative cooling induced by pulse perturbations

We investigate the dynamics brought on by an impulse perturbation in two infinite-range quantum Ising models coupled to each other and to a dissipative bath. We show that, if dissipation is faster the higher the excitation energy, the pulse perturbation cools down the low-energy sector of the system, at the expense of the high-energy one, eventually stabilising a transient symmetry-broken state at temperatures higher than the equilibrium critical one. Such non-thermal quasi-steady state may survive for quite a long time after the pulse, if the latter is properly tailored.

Automated summary

The study shows that when dissipation is faster with higher excitation energy, an impulse perturbation cools down the low-energy sector of the system while compromising the high-energy one, eventually stabilizing a transient symmetry-broken state at temperatures higher than the equilibrium critical one. This non-thermal quasi-steady state may persist for a long time after the impulse, if it is tailored correctly.