Conveners
Parallel session 10: QCD phase diagram & critical point IV
- Joachim Stroth
A recent suggestion for finding the QCD critical endpoint [arXiv:2410.16206]
is to investigate entropy contours on the QCD phase diagram. We generalize this
idea to other lines of constant observables, like that of strangeness
susceptibility. Such quantities can not be directly calculated in lattice QCD
because of the infamous sign problem. We present an analytical continuation of
various...
In the past year, results for the location of the critical point from different
approaches seem to converge towards previous predictions from functional QCD.
We summarise recent theoretical results of the latter approach on the
Columbia plot [1], the QCD phase diagram and the location of the critical
point at finite baryon chemical potential [3]. We highlight our efforts to...
One method to estimate the position of the critical endpoint of QCD is to model the free energy as a rational function of the baryon chemical potential $\mu_B$ and determine the Lee-Yang edge singularities. Using high-statistics simulations on 4HEX improved staggered $16^3\times 8$ lattices by the Wuppertal-Budapest Collaboration we estimate the location of the closest singularity in the QCD...
A key question about the QCD phase diagram is whether there is a critical point somewhere on the boundary between the hadron gas and quark-gluon plasma phases, and if so where. Heavy-ion collisions offer a unique opportunity to search for signatures of such a critical point by analyzing event-by-event fluctuations in particle multiplicities. To draw meaningful conclusions from experimental...
Ultrarelativistic nuclear collisions have revealed the existence of a hot, dense medium exhibiting collective flow with minimal viscous dissipation, indicative of a strongly interacting quark-gluon plasma. The CMS Collaboration previously measured the speed of sound in this medium, determining a value of approximately 0.241 at an effective temperature of 219 MeV in ultracentral 5.02 TeV PbPb...
