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Article overview
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Quantum quenches, dynamical transitions and off-equilibrium quantum criticality | Bruno Sciolla
; Giulio Biroli
; | Date: |
12 Nov 2012 | Abstract: | Several mean-field computations have revealed the existence of an out of
equilibrium dynamical transition induced by quantum quenching an isolated
system starting from its symmetry broken phase. In this work we focus on the
quantum phi^4 N-component field theory. By taking into account dynamical
fluctuations at the Hartree-Fock level, corresponding to the leading order of
the 1/N expansion, we derive the critical properties of the dynamical
transition beyond mean-field theory (including at finite temperature). We find
diverging time and length-scales, dynamic scaling and aging. Finally, we unveil
a relationship with coarsening, an off-equilibrium dynamical regime that can be
induced by quenching from the symmetric toward the symmetry broken phase. | Source: | arXiv, 1211.2572 | Services: | Forum | Review | PDF | Favorites |
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