期刊
SCIPOST PHYSICS
卷 12, 期 1, 页码 -出版社
SCIPOST FOUNDATION
DOI: 10.21468/SciPostPhys.12.1.014
关键词
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资金
- POR Calabria FESR-FSE 2014/2020 - Linea B) Azione 10.5.12 [A.5.1]
- European Research Council (ERC) under the European Union [692670]
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.
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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