More than twenty years after quantum chromodynamics (QCD) was introduced as a
microscopic theory of strong interactions, very little is known about its solutions. At least in …

The directional weak decay constants of neutral pions are determined at finite temperature
T, chemical potential μ and in the presence of a constant magnetic field B. To do this, we first …

Abstract By extending the\(\Phi\)-derivable approach in the Nambu–Jona-Lasinio model to a
finite magnetic field we calculate the properties of pion,\(\sigma\), and\(\rho\) mesons in a …

We compute the transport coefficients, namely, the coefficients of shear and bulk viscosity,
as well as thermal conductivity, for hot and dense quark matter. The calculations are …

A bstract We perform a complete calculation of the pion-kaon scattering amplitude in Chiral
Perturbation Theory at finite temperature, paying particular attention to the analytic structure …

We review the BCS–BEC crossover in relativistic Fermi systems, including the QCD matter at
finite density. In the first part, we study the BCS–BEC crossover in a relativistic four-fermion …

Roy-equation analysis on lattice data of π π scattering phase shifts at m π= 391 MeV reveals
that the lowest f 0 meson becomes a bound state under this condition. In addition, there is a …

We calculate the pion scattering amplitude at nonzero temperature and nonzero μ 5, the
chemical potential associated to chiral imbalance in a locally P-breaking scenario. The …

Abstract The 2 H, 12 C, 40 Ca, 208 Pb (π+, π+ π±) reactions have been studied at T π+=
282.7 MeV, and the π+ π±invariant mass distributions M π+ π±A measured down to the 2 m …

We present the pion–pion elastic scattering amplitude at finite temperature to one-loop in
chiral perturbation theory. The thermal scattering amplitude properly defined allows to …