3 papers
hep-ph2026
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…
math.NA2025
Generalized rational Prony and Bernoulli methods
Tamás Dózsa, Matthias Voigt, Zoltán Szabó +2
The generalized operator-based Prony method is an important tool for describing signals which can be written as finite linear combinations of eigenfunctions of certain linear opera…
hep-ph2025
Naive Gaussian approximation in a quark-meson model
GyÅzÅ Kovács, Zsolt Szép, Péter Kovács +1
A sequence of approximations is derived to go beyond the mean-field level in the case of a simple linear sigma model. A naive, local version of the Gaussian approximation is discus…