Almási Gábor: Modeling chiral criticality and its consequences for heavy-ion collisions
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Europe/Budapest
Tanacsterem
Tanacsterem
Description
A central question in heavy-ion physics is whether there is a chiral
critical endpoint (CEP) in the QCD phase diagram and if there is,
where it is located. To learn about the location of the CEP
experimentally, fluctuation observables of conserved charges have
been proposed. Around critical points, such as the CEP in QCD,
higher order cumulants of the relevant quantities show universal
nonanalytic behavior. The universal behavior of baryon number
cumulants around the CEP of QCD can be studied in effective models
of QCD that lie in the same universality class, and can be related
to the net-proton fluctuations measured in heavy-ion collisions.
Such an effective model is for example the Quark Meson model. In my
talk, I discuss what one can learn from effective field theory
studies of fluctuations and present my results obtained using the
Functional Renormalization Group method in the Quark Meson model.
