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SUMMARY:[RBRC seminar] Order of the QCD chiral phase transition in the chi
 ral limit
DTSTART:20261105T180000Z
DTEND:20261105T200000Z
DTSTAMP:20261113T185500Z
UID:indico-event-34989@indico.bnl.gov
DESCRIPTION:Speakers: Gergely Fejos (Eotvos university)\n\nThe order of th
 e chiral phase transition for massless quarks remains an open problem. The
  perturbative renormalization group in the ε-expansion predicts a fluctua
 tion-induced first-order transition for N_f ≥ 3\, and also for N_f = 2 i
 f the U(1)_A anomaly is effectively restored at the critical temperature. 
 Lattice simulations\, by contrast\, have found the first-order region of t
 he Columbia plot shrinking as the continuum limit is approached\, with no 
 clear signal of a first-order transition toward the chiral limit. I will d
 iscuss how the functional renormalization group\, applied directly in thre
 e dimensions\, may resolve this tension. I will show that a stable infrare
 d fixed point can exist\, making the transition second order for any numbe
 r of flavors\, with the outcome controlled by the strength of the axial an
 omaly near the transition temperature.\n\nhttps://indico.bnl.gov/event/349
 89/
LOCATION:2-160 (https://bnl.zoomgov.com/j/1600983728?pwd=RAD7OLcqre7Ycsp6J
 fFp6HAnpyLxex.1)
URL:https://indico.bnl.gov/event/34989/
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