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.
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- 1 2 ANDREA NAVA,
- 3 Michele Fabrizio
- 1 Istituto Nazionale di Fisica Nucleare / National Institute for Nuclear Physics [INFN]
- 2 Università della Calabria / University of Calabria [UNICAL]
- 3 Scuola Internazionale Superiore di Studi Avanzati / International School for Advanced Studies [SISSA]