Renormalization-group methods provide a viable approach for investigating the emergent collective behavior of classical and quantum statistical systems in both equilibrium and nonequilibrium conditions. Within this approach we investigate here the dynamics of an isolated quantum system represented by a scalar phi(4) theory after a global quench of the potential close to a dynamical critical point. We demonstrate that, within a prethermal regime, the time dependence of the relevant correlations is characterized by a short-time universal exponent, which we calculate at the lowest order in a dimensional expansion.

Short-time universal scaling in an isolated quantum system after a quench / Chiocchetta, A; Tavora, M; Gambassi, Andrea; Mitra, A.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 91:22(2015). [10.1103/PhysRevB.91.220302]

Short-time universal scaling in an isolated quantum system after a quench

Gambassi, Andrea;
2015-01-01

Abstract

Renormalization-group methods provide a viable approach for investigating the emergent collective behavior of classical and quantum statistical systems in both equilibrium and nonequilibrium conditions. Within this approach we investigate here the dynamics of an isolated quantum system represented by a scalar phi(4) theory after a global quench of the potential close to a dynamical critical point. We demonstrate that, within a prethermal regime, the time dependence of the relevant correlations is characterized by a short-time universal exponent, which we calculate at the lowest order in a dimensional expansion.
2015
91
22
220302
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.220302
https://arxiv.org/abs/1604.04614
Chiocchetta, A; Tavora, M; Gambassi, Andrea; Mitra, A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/14921
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