Speaker
Maria Paola Lombardo
Description
Ab-initio results from QCD topological susceptibility as a function of temperature constrain the freeze-out of the QCD axion, and in turn limit the available parameter space of today's axion coupling and mass. The talk reviews the status of lattice studies, with emphaysis on extrapolation to the relevant temperarure range. Issues related with the continuum limit of lattice results with physical quark masses are discussed as well.
