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SUMMARY:Fluctuations near the liquid-gas and chiral phase transitions in h
 adronic matter
DTSTART;VALUE=DATE-TIME:20230530T124500Z
DTEND;VALUE=DATE-TIME:20230530T130500Z
DTSTAMP;VALUE=DATE-TIME:20261010T163736Z
UID:indico-contribution-382@indico.ipb.ac.rs
DESCRIPTION:Speakers: Michał  Marczenko (University of Wrocław\, Poland)
 \nWe investigate the fluctuations of the net-baryon number density in dens
 e hadronic matter. Chiral dynamics is modeled via the parity doublet Lagra
 ngian\, and the mean-field approximation is employed to account for chiral
  criticality. We focus on the qualitative properties and systematics of th
 e second-order susceptibility of the net-baryon number density for individ
 ual positive- and negative-parity nucleons whose masses become degenerate 
 at the chiral restoration. It is shown that the second-order susceptibilit
 y of the positive-parity state can become negative when the chiral symmetr
 y is restored\, as a natural consequence of the unique relationship of the
  mass to the order parameter. Moreover\, we find that such negative fluctu
 ations are indicative of approaching the critical point on the chiral phas
 e boundary. Our results may have consequences for the interpretation of th
 e experimental data on net-proton fluctuations in heavy-ion collisions.\n\
 nhttps://events.saifa.rs/event/554/contributions/382/
LOCATION:SANU (Serbian Academy of Science and Arts) - Belgrade\, Serbia
URL:https://events.saifa.rs/event/554/contributions/382/
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