期刊
PHYSICAL REVIEW B
卷 91, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.220302
关键词
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资金
- National Science Foundation [NSF-DMR 1303177]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1303177] Funding Source: National Science Foundation
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.
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