Supercooled Goldstone bosons at the QCD chiral phase transitionFlorio, Adrien (Avtor) Grossi, Eduardo (Avtor) Mazeliauskas, Aleksas (Avtor) Soloviev, Alexander (Avtor) Teaney, Derek (Avtor) critical phenomenaquantum chromodynamicsphase transitionshigh energy physicsWe discuss a universal nonequilibrium enhancement of long-wavelength Goldstone bosons induced by quenches to the broken phase in Model G—the dynamical universality class of an O⁡(4) antiferromagnet and the chiral phase transition in QCD. Scaling arguments for the coarsening dynamics describing the formation of the chiral condensate predict a parametric enhancement in the infrared spectra of Goldstone bosons, a prediction confirmed by stochastic simulations of the transition. The details of the enhancement are determined by the nonlinear dynamics of a superfluid effective theory, which is a limit of Model G reflecting the broken O⁡(4) symmetry. Our results translate to a parametric enhancement of low-momentum pions in heavy-ion collisions at the LHC, which are underpredicted in current hydrodynamic models without critical dynamics.20252026-02-05 10:41:13Članek v reviji179114UDK: 539.1ISSN pri članku: 0031-9007DOI: 10.1103/wyn4-ncdcCOBISS_ID: 267422467sl