11 papers
Higher topological charge in the QCD vacuum and axion cosmology
Fabian Rennecke
It is shown that gauge field configurations with higher topological charge modify the structure of the QCD vacuum, which is reflected in its dependence on the CP-violating topologi…
Scalar diquarks in the QCD vacuum
Hosein Gholami, Ugo Mire, Fabian Rennecke +2
While QCD fundamentally only depends on the values of the strong coupling and the quark masses, it exhibits a rich nonperturbative structure at low energies, where composite fields…
Strangeness neutrality and the QCD phase diagram
Wei-jie Fu, Chuang Huang, Jan M. Pawlowski +3
We map out the phase structure of flavour QCD at strangeness neutrality with functional QCD. We find a critical end point at $(T_{\rm CEP},μ_{B,{\rm CEP}})|_{n_S=0} = (9…
Chiral anomaly: from vacuum to Columbia plot
Francesco Giacosa, GyÅzÅ Kovács, Péter Kovács +2
We use a low-energy effective approach, the extended linear sigma model, to study realizations of the anomaly with different operators, linear and quadratic in the 't Hoof…
Inhomogeneous instabilities in high-density QCD
Jan M. Pawlowski, Fabian Rennecke, Franz R. Sattler
QCD at large densities exhibits a moat regime in the scalar-pseudoscalar sector. The resolution of its dynamics is pivotal for the access to the onset of new phases including the p…
Dissecting the moat regime at low energies I: Renormalization and the phase structure
Fabian Rennecke, Shi Yin
Dense QCD matter can feature a moat regime, where the static energy of mesons is minimal at nonzero momentum. Valuable insights into this regime can be gained using low-energy mode…