5 papers
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…
Emergence of the polydeterminant in QCD
Francesco Giacosa, MichaÅ Zakrzewski, Shahriyar Jafarzade +1
A generalization of the determinant appears in particle physics in effective Lagrangian interaction terms that model the chiral anomaly in Quantum Chromodynamics (PRD 97 (2018) 9,…
Ordinary and exotic mesons in the extended Linear Sigma Model
Francesco Giacosa, Péter Kovács, Shahriyar Jafarzade
The extended Linear Sigma Model (eLSM) is a hadronic model based on the global symmetries of QCD and the corresponding explicit, anomalous, and spontaneous breaking patterns. In it…
Anomalous couplings and the Columbia plot
Francesco Giacosa, GyÅzÅ Kovács, Péter Kovács +2
When the quark masses are lighter than those in QCD, the standard lore is that a chiral transition of first order must emerge for three, light flavors. Recently, however, numerical…
Scalar field with a time-independent classical source, not trivial after all: from vacuum decay to scattering
Leonardo Tinti, Arthur Vereijken, Shahriyar Jafarzade +1
Historically it has been believed that a time-independent classical source has no effect on the scattering of relativistic uncharged field, in contrast with single particle quantum…