INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Strongly interacting matter under external magnetic fields within nonlocal NJL-type models
VALERIA PAGURA; NORBERTO N. SCOCCOLA; SANTIAGO NOGUERA; DANIEL GOMEZ DUMM
Conferencia; XIIth Quark Confinement & the Hadron Spectrum; 2016
We study the behavior of strongly interacting matter under an external magnetic ﬁeld in the context of nonlocal Nambu?Jona-Lasinio (NJL)-like models. We ﬁnd that at zero temperature the condensates display the well-known Magnetic Catalysis effect, showing a good quantitative agreement with lattice QCD (LQCD) results. Moreover, when extended to ﬁnite temperature we ﬁnd that (contrary to what happens in the local NJL model) the Inverse Magnetic Catalysis (IMC) effect is naturally incorporated. We also analyze the magnetic susceptibility of the QCD vacuum in the limit of small mag-netic ﬁeld, considering two different model parametrizations, and compare our numerical results to those obtained in other theoretical approaches and in LQCD calculations.