“…[32,33,34,35], the Matsubara formalism is used for calculations at T > 0. The usage of the above separable model interaction simplifies greatly DS equations and calculations at finite T , while yielding equivalent results on a given level of truncation [32,36], and a similar quality of results for pions [32,33] and now also for kaons [34] (and fictitious ss pseudoscalars) at T = 0 as in Refs. [28,29,30,31], which employ more realistic interactions while modeling QCD.…”