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SUMMARY:Deconfined quark matter in compact stars: equation of state\, meta
 stability\, and nucleation
DTSTART;VALUE=DATE-TIME:20260624T070000Z
DTEND;VALUE=DATE-TIME:20260624T080000Z
DTSTAMP;VALUE=DATE-TIME:20260704T050800Z
UID:indico-event-5127@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Mirco Guerrini (University of Ferrara)\n\nAbstract:
   The behavior of strongly interacting matter at densities above nuclear
  saturation and the associated deconfinement phase transition remain open 
 problems. Such conditions may arise in compact stars and related phenomena
 \, such as binary mergers and core-collapse supernovae\, which are now inc
 reasingly accessible through multimessenger astronomy. Phenomenological sc
 enarios for compact stars depend crucially on whether strange quark matter
  (SQM) is absolutely stable: if not\, sufficiently high central densities 
 yield hybrid stars\; by contrast\, under the Bodmer–Witten hypothesis SQ
 M is the true ground state\, and metastable neutron stars (NSs) may coexis
 t with stable strange quark stars (QSs)\, leading to the two-families scen
 ario.  I will address two complementary aspects of modeling deconfinemen
 t. First\, a finite-temperature framework for first-order hadron–quark t
 ransitions in which charge neutrality is enforced through a continuous int
 erpolation between local and global conservation\, recovering the Maxwell 
 and Gibbs constructions as limiting cases and making the mixed-phase stren
 gth tunable in a thermodynamically consistent way. Second\, the role of me
 tastability and nucleation: a first-order transition can leave the system 
 trapped in a local minimum until a fluctuation overcomes the barrier. This
  is particularly relevant in the two-families scenario in which hadronic m
 atter is always metastable against conversion to SQM. I study its decay vi
 a nucleation\, incorporating strong-interaction constraints\, thermal comp
 osition fluctuations\, and color superconductivity\, and apply it to proto
 -neutron stars to assess whether long-lived NS and QS populations can coex
 ist. Finally\, I present a first Bayesian analysis of the two-families sce
 nario using current multimessenger data.Meeting link: https://meeting.ten
 cent.com/dm/xlBCxTpHTqdv  ID: 941903189     Passcode: 414915 \n\nh
 ttps://indico-tdli.sjtu.edu.cn/event/5127/
LOCATION:Online Only 
URL:https://indico-tdli.sjtu.edu.cn/event/5127/
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