Strong and Electro-Weak Matter 2026

Session

QCD in Extreme Conditions Contributions 2

18 Aug 2026, 11:45

F4050 (4th floor) (University of Helsinki Main Building)

84. Topological Susceptibility at High Temperatures from Unquenched Lattice QCD

Simon Stendebach (TU Darmstadt)

18/08/2026, 11:45

QCD in extreme conditions and dense nuclear matter

talk (15min)

The QCD topological susceptibility $ \chi $ gives the mass of the hypothetical QCD axion. Understanding its behavior at high temperatures $ T $ is important for the axion’s cosmological history and possible role as the dark matter. In this work, we measure $ \chi $ directly from unquenched 2+1+1 flavor Lattice QCD in a temperature range of 435 MeV to 1020 MeV. To resolve the problem of...

25. Equation of state of hot and dense QCD using the complex Langevin equation

Michael Mandl (University of Graz)

18/08/2026, 12:00

QCD in extreme conditions and dense nuclear matter

talk (15min)

A proper understanding of QCD under extreme conditions such as high temperature and densities is of fundamental importance for the theoretical description of, e.g., heavy-ion collisions, neutron stars, and the early universe. However, the non-perturbative study of QCD at non-zero baryon density from the point of view of lattice field theory is hampered by the infamous sign problem, preventing...

42. Recent results on thermal resonances and chiral and $U(1)_A$ restoration

Prof. Angel Gomez Nicola (Universidad Complutense Madrid)

18/08/2026, 12:15

QCD in extreme conditions and dense nuclear matter

talk (15min)

We will review recent progress towards the understanding of chiral and $U(1)_A$ symmetry restoration within the QCD phase diagram, arising from our results on effective theories, Ward Identities (WI) and resonances at finite temperature and chemical potentials. Our approach allows to control in a systematic and consistent way the dependence on relevant variables such as quark masses,...