Conveners
Parallel session 30: QCD phase diagram & critical point II
- Anar Rustamov (GSI Helmholtzzentrum für Schwerionenforschung GmbH)
The chiral phase transition in (2+1)-flavor QCD is expected to be of second order if the breaking of axial anomaly remains sufficiently strong at the chiral phase transition temperature $T_c$ [1]. This is supported by lattice QCD calculations [2]. However, FRG model calculations suggest that the scaling window, in which universal scaling relations hold, may be small [3]. Furthermore, whether...
Introduction of a nonzero isospin chemical potential in QCD leads to the emergence of a pion condensed phase at sufficiently large $\mu_I$, bounded by a second order transition line. At zero temperature the pion condensate appears at $\mu_I = m_\pi/2$. Recent numerical studies at physical quark masses show that the pion condensation boundary remains vertical up to the meeting point with the...
Fluctuations and correlations of conserved charges serve as sensitive observables for investigating QCD thermodynamics. In particular, baryon-strangeness correlations may offer insights on changing degrees of freedom carrying strangeness.
In this work, we present the measurements of baryon-strangeness correlations in Au+Au collisions from the beam energy scan program (BESI and BESII,...
We propose a new method to investigate the existence and location of the conjectured high-temperature critical point of strongly interacting matter via contours of constant entropy density. By approximating these lines as a power series in the baryon chemical potential $\mu_B$, one can extrapolate them from first-principle results at zero net-baryon density, and use them to locate the QCD...
The QCD cross-over line in the temperature ($T$) -- baryo-chemical potential ($\mu_B$) plane has been computed by several lattice groups by calculating the chiral order parameter and its susceptibility at finite values of $\mu_B$. In this work we focus on the deconfinement aspect of the transition between hadronic and Quark Gluon Plasma (QGP) phases. We define the deconfinement temperature as...
Higher-order cumulants of (net-)proton multiplicity distributions serve as sensitive observables for probing the QCD phase diagram and searching for the QCD critical point (CP). Critical point is a long range collective phenomenon, and within a larger kinematic range, the critical point signal is significantly enhanced, especially in the higher-order cumulants of net-proton multiplicity...
