Higher order fluctuations and correlations of conserved charges from lattice QCD

2018/05/11 by Szabolcs Borsanyi, Zoltan Fodor, Jana N. Guenther +7 · 1 citation
Physics and Astronomy · #Cumulant #Diagonal #High-Energy Particle Collisions Research #Lattice (music) #Order (exchange) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Strangeness #hep-lat

paper · pdf · doi:10.1007/jhep10(2018)205

22 pages, 12 figures

arxiv created 2018/05/11 · openalex created_date 2018/05/17 · openalex publication_date 2018/10/01 · arxiv updated 2018/11/14 · openalex updated_date 2026/08/06

Abstract

A bstract We calculate several diagonal and non-diagonal fluctuations of conserved charges in a system of 2+1+1 quark flavors with physical masses, on a lattice with size 48 3 × 12. Higher order fluctuations at μ B = 0 are obtained as derivatives of the lower order ones, simulated at imaginary chemical potential. From these correlations and fluctuations we construct ratios of net-baryon number cumulants as functions of temperature and chemical potential, which satisfy the experimental conditions of strangeness neutrality and proton/baryon ratio. Our results qualitatively explain the behavior of the measured cumulant ratios by the STAR collaboration.

Citations

• Ab Initio Determination of Light Hadron Masses
• Critical point of QCD at finite T and , lattice results for physical quark masses
• QCD equation of state with almost physical quark masses
• Quark number susceptibilities of hot QCD up tog6lng
• A new look at the statistical model identification
• QCD thermal phase transition in the presence of a small chemical potential
• Curvature of the pseudocritical line in QCD: Taylor expansion matches analytic continuation
• Three-loop HTLpt thermodynamics at finite temperature and chemical potential

Cited by

• Quartic cumulant of baryon number in the presence of a QCD critical point
• Reliable estimation of the radius of convergence in finite density QCD