NEW RESULTS ON THE INSTANTON VACUUM AND THE CHIRAL PHASE-TRANSITION

The talk contains brief review of two related topics. The first is the last year progress in the instanton-based vacuum model, including (i) properties of the glueballs, (ii) screening of the topological charge and eta' physics. Those are done in the ''interacting instanton liqui d model'', with the ''unquenched'' dynamical quarks. The second topic is physics of chiral symmetry restoration, which is attributed to form ation of polarized instanton-antiinstanton molecules. New Lagrangian d escribing non-perturbative interaction at T > T-c, as well as calculat ion of the spectrum of ''screening masses'' are presented.