Parquet formalism applied to pnictide superconductors

DMFT combined with Parquet approximation is used to study the single particle property of pnictide superconductors (such as FeSe, SrFe2As2,...) in an attemp to understand the enhancement of superconducitivity under pressure. By tracking the evolution of one-particle spectral function, pressure dependence of this type of compound is studied in depth. In the study, inhomogeneous frequency grid is used to high frequency summation.