Resumen: We investigate the physical consequences of the survival of the effects of the U(1)A anomaly in the chiral symmetric phase of QCD, and show that the free energy density is a singular function of the quark mass m, in the chiral limit, and that the s and p- susceptibilities diverge in this limit at any T=Tc. We also show that the difference between the p- and d- susceptibilities diverges in the chiral limit at any T=Tc, a result which seems to be excluded by recent results of Tomiya et al. from numerical simulations of two-flavor QCD. We also discuss on the generalization of these results to the Nf=3 model. Idioma: Inglés DOI: 10.1103/PhysRevD.96.014505 Año: 2017 Publicado en: PHYSICAL REVIEW D 96, 1 (2017), 0145051-0145056 ISSN: 2470-0010 Factor impacto JCR: 4.394 (2017) Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 15 / 66 = 0.227 (2017) - Q1 - T1 Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 7 / 29 = 0.241 (2017) - Q1 - T1 Factor impacto SCIMAGO: 1.801 - Physics and Astronomy (miscellaneous) (Q1)