Quenching through the QCD chiral phase transition
We present a detailed numerical and analytical study of the out-of-equilibrium dynamics of Model G, the dynamical universality class relevant to the chiral phase transition. We perform numerical 3D stochastic (Langevin) simulations of the - - - O -...
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| Autori principali: | , , , , |
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| Natura: | Article (Journal) |
| Lingua: | inglese |
| Pubblicazione: |
12 December 2025
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| In: |
Physical review
Year: 2025, Volume: 112, Fascicolo: 11, Pages: 1-27 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/plfm-z5xx |
| Accesso online: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/plfm-z5xx Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/plfm-z5xx 
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| Note sull'autore: | Adrien Florio, Eduardo Grossi, Aleksas Mazeliauskas, Alexander Soloviev, and Derek Teaney |
| Riassunto: | We present a detailed numerical and analytical study of the out-of-equilibrium dynamics of Model G, the dynamical universality class relevant to the chiral phase transition. We perform numerical 3D stochastic (Langevin) simulations of the - - - O - ( - 4 - ) - - - critical point for large lattices in the chiral limit. We quench the system from the high-temperature unbroken phase to the broken phase and study the nonequilibrium dynamics of pion fields. Strikingly, the nonequilibrium evolution of the two-point functions exhibits a regime of growth, a parametrically large enhancement, and a subsequent slow relaxation to equilibrium. We analyze our numerical results using dynamic critical scaling and mean-field theory. The growth of the two-point functions is determined by the nonlinear dynamics of an ideal non-Abelian superfluid, which is a limit of Model G that reflects the broken chiral symmetry. We also relate the nonequilibrium two-point functions to a long-lived parametric enhancement of soft pion yields relative to thermal equilibrium following a quench. |
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| Descrizione del documento: | Gesehen am 01.06.2026 |
| Descrizione fisica: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/plfm-z5xx |