35 research outputs found
Influence of finite volume effect on the Polyakov Quark-Meson model
In the current work, we study the influence of a finite volume on
Polyakov Quark-Meson model (PQM) order parameters, (fluctuations)
correlations of conserved charges and the quark-hadron phase boundary. Our
study of the PQM model order parameters and the (fluctuations) correlations of
conserved charges indicates a sizable shift of the quark-hadron phase boundary
to higher values of baryon chemical potential () and temperature ()
for decreasing the system volume. The detailed study of such effect could have
important implications for the extraction of the (fluctuations) correlations of
conserved charges of the QCD phase diagram from heavy ion data.Comment: 12 pages, 8 figure
Collision system and beam energy dependence of anisotropic flow fluctuations
New measurements of two- and four-particle elliptic flow are used to
investigate flow fluctuations in collisions of U+U at =
193~GeV, Cu+Au at = 200~GeV and Au+Au at several beam energies.
These measurements highlight the dependence of these fluctuations on the
event-shape, system-size and beam energy and indicate a dominant role for
initial-state-driven fluctuations. These measurements could provide further
constraints for initial-state models, as well as for precision extraction of
the temperature-dependent specific shear viscosity
Influence of finite volume and magnetic field effects on the QCD phase diagram
The Polyakov linear sigma model (PLSM) is used to investigate the respective
influence of a finite volume and a magnetic field on the quark-hadron phase
boundary in the plane of baryon chemical potential () vs. temperature
() of the QCD phase diagram. The calculated results indicate sizable shifts
of the quark-hadron phase boundary to lower values of
for increasing magnetic field strength, and an opposite shift to higher values
of for decreasing system volume. Such shifts could
have important implications for extraction of the thermodynamic properties of
the QCD phase diagram from heavy ion data