BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:**Isospin-Driven Splitting of Chemical Potentials in Isobar Collis
 ions from Lattice QCD**
DTSTART;VALUE=DATE-TIME:20261010T084500Z
DTEND;VALUE=DATE-TIME:20261010T090000Z
DTSTAMP;VALUE=DATE-TIME:20261005T092049Z
UID:indico-contribution-2852@indico.itp.ac.cn
DESCRIPTION:Speakers: 佳 倪 (Central China Normal University)\nStrong ma
 gnetic fields produced in relativistic heavy-ion collisions can modify con
 served-charge fluctuations and their associated chemical potentials. The R
 u and Zr isobars share the same mass number\, $A=96$\, but have different 
 charge-to-baryon ratios\, making Ru+Ru and Zr+Zr collisions a controlled s
 etting for isolating isospin effects. In this talk\, we will present first
 -principles\, continuum-estimated $(2+1)$-flavor lattice-QCD results for i
 sospin-driven splittings of conserved-charge chemical potentials near the 
 QCD crossover\, at both vanishing and nonzero external magnetic fields alo
 ng the pseudocritical line $T_{\\mathrm{pc}}(eB)$. Under strangeness neutr
 ality and the charge-to-baryon constraint $r\\equiv n_Q/n_B$\, the differe
 nce in nuclear isospin composition is mapped onto the splitting ratios $\\
 Delta\\mu_Q/\\Delta\\mu_B$\, $\\Delta\\mu_S/\\Delta\\mu_B$\, and $\\Delta\
 \mu_S/\\Delta\\mu_Q$. At vanishing magnetic field\, the lattice results yi
 eld $\\Delta\\mu_Q0$\, with the electric-charge sector dominating\, and th
 e splitting ratios are similar in magnitude to recent Bayesian extractions
  from STAR isobar data. At nonzero magnetic fields\, the splitting ratios 
 themselves vary only moderately with $eB$. A clearer field signal emerges 
 from the Ru-Zr difference in the normalized magnetic-field response: in la
 ttice QCD\, the relative response of $\\mu_Q/\\mu_B$ is substantially stro
 nger in Ru+Ru than in Zr+Zr. We also present hadron resonance gas (HRG) re
 sults and experimentally motivated proxy observables with kinematic cuts t
 o facilitate contact with experiment. These results provide first-principl
 es benchmarks for the conserved-charge response to isospin and magnetic fi
 elds in isobar collisions.\nThis talk is based on our recent work: H.-T. D
 ing\, J.-B. Gu\, A. Kumar\, and J. Ni\, arXiv:2606.30164 [hep-lat] (2026).
 \n\nhttps://indico.itp.ac.cn/event/437/contributions/2852/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2852/
END:VEVENT
END:VCALENDAR