TY - JOUR
T1 - Short-time universal scaling in an isolated quantum system after a quench
AU - Chiocchetta, Alessio
AU - Tavora, Marco
AU - Gambassi, Andrea
AU - Mitra, Aditi
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/6/22
Y1 - 2015/6/22
N2 - 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 φ4 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.
AB - 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 φ4 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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U2 - 10.1103/PhysRevB.91.220302
DO - 10.1103/PhysRevB.91.220302
M3 - Article
AN - SCOPUS:84934343734
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 220302
ER -