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SUMMARY:Confining density functional approach to the QCD phase diagram at 
 low temperatures and thermal twin stars
DTSTART:20261114T080000Z
DTEND:20261114T100000Z
DTSTAMP:20261105T213400Z
UID:indico-event-7561@indico.pnp.ustc.edu.cn
DESCRIPTION:题目：Confining density functional approach to the QCD phas
 e diagram at low temperatures and thermal twin stars报告人：David Blas
 chke教授时间：16:00--17:00\, 2026年11月14日(周六)组织单位：
 安徽省理论物理基础学科研究中心、国家创新引智基地\n
 摘要：We present a density functional-based equation of state for warm\
 , dense nuclear and deconfined quark matter\, relevant for supernova explo
 sions\, neutron star mergers\, and Q-ball cosmology. Nuclear matter uses a
  relativistic density functional model\, while quark matter employs a conf
 ining approach\, with the phase transition determined via Maxwell construc
 tion. Analyzing TOV equations for isentropic hybrid stars\, we find that a
 t finite temperatures above a critical entropy\, disconnected third family
  branches (“thermal twin stars”) can appear in the DDf–SFM model\, t
 hough they are absent with color superconductivity. This critical entropy 
 aligns well with the Seidov criterion for gravitational instability. We su
 ggest thermal twin stars can indicate supernova explodability for massive 
 blue supergiants\, effectively constraining hybrid equation of state model
 s and favoring the exclusion of strong color superconductivity. For symmet
 ric matter\, the deconfinement onset density shows high sensitivity to col
 or superconductivity relative to flow constraints. \n报告人简介：Pr
 of. Dr. hab. Dr. h.c. David Blaschke is a distinguished theoretical physic
 ist specializing in strongly interacting matter at high densities and temp
 eratures\, quantum field theory\, and compact star astrophysics. He earned
  his PhD in 1987 and habilitated in 1995 from the University of Rostock\, 
 where he later served as a Professor in Particle and Astrophysics. Having 
 held leadership roles such as Vice Director of the Bogoliubov Laboratory f
 or Theoretical Physics at JINR Dubna\, he has been a Full Professor at the
  University of Wroclaw since 2006 and a bridge professor at CASUS Goerlitz
  since 2023. A recognized global expert\, Blaschke has directed numerous g
 raduate students\, coordinated major international research networks and H
 elmholtz International Summer Schools\, and authored over 250 papers (with
  an h-index of 45) alongside editing more than 20 books. He serves as Edit
 or-in-Chief of the European Journal of Physics A\, is a member of the Acad
 emia Europaea\, and has received honorary doctorates from Dubna State Univ
 ersity and the Russian-Armenian University\, as well as the prize of the P
 olish Minister for Education and Science.\n\n \n\nhttps://indico.pnp.ustc
 .edu.cn/event/7561/
URL:https://indico.pnp.ustc.edu.cn/event/7561/
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