CPOD2022 - Workshop on Critical Point and Onset of Deconfinement

Session

Critical Point - 5

Dec 2, 2022, 5:10 PM

Conveners

Critical Point - 5

• Anar Rustamov (GSI Germany, National Nuclear Research Center, Baku, Azerbaijan)

41. Characteristic momentum of Hydro+ and a bound on the sound speed enhancement near the QCD critical point

Navid Abbasi (Lanzhou University)

12/2/22, 5:10 PM

Near the critical point in the QCD phase diagram, hydrodynamics breaks down at a momentum where the frequency of the fastest hydrodynamic mode becomes comparable with the decay rate of the slowest non-hydrodynamic mode. Hydro+ was developed as a framework which extends the range of validity of hydrodynamics beyond that momentum. In this talk, we first discuss the analytic structure of the...

68. Towards locating the (real) critical end point

Friederike Ihssen (ITP Heidelberg)

12/2/22, 5:30 PM

Lattice simulations and functional approaches established that QCD has no phase transition at small baryon chemical potential. However, second order phase transitions are expected at the conjectured critical endpoint at larger chemical potential and in the chiral limit at vanishing chemical potential.

These phase transitions leave an imprint as Lee-Yang edge singularities and can be found...

15. Characterising the hot and dense fireball with virtual photons at HADES

Niklas Schild

12/2/22, 5:50 PM

Anisotropic flow serves as a central observable for characterising collectivity in heavy-ion collisions. While all particles experience flow, virtual photons, decaying into lepton pairs, may serve as particularly interesting probes in this context. They can penetrate the strongly interacting medium and deliver information about conditions in the early stages of maximum temperature and density....