The topological susceptibility from grand canonical simulations in the interacting instanton liquid model: chiral phase transition and axion mass

Understand

This is the last in a series of papers on the topological susceptibility in the interacting instanton liquid model (IILM).

• We will derive improved finite temperature interactions to study the thermodynamic limit of grand canonical Monte Carlo simulations in the quenched and unquenched case with light, physical quark masses.
• In particular, we will be interested in chiral symmetry breaking.
• The paper culminates by giving, for the first time, a well-motivated temperature-dependent axion mass.