EPJ Web Conf.
Volume 137, 2017XIIth Quark Confinement and the Hadron Spectrum
|Number of page(s)||7|
|Published online||22 March 2017|
Strongly interacting matter under external magnetic fields within nonlocal NJL-type models
1 Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, E-46100 Burjassot (Valencia), Spain
2 IFLP, CONICET − Departamento de Física, Fac. de Cs. Exactas, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata, Argentina
3 CONICET, Rivadavia 1917, 1033 Buenos Aires, Argentina
4 Departamento de Física Teórica, Comisión Nacional de Energía Atómica, Av. Libertador 8250, 1429 Buenos Aires, Argentina
5 Universidad Favaloro, Solís 453, 1078 Buenos Aires, Argentina
a e-mail: Valeria.Pagura@uv.es
Published online: 22 March 2017
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 magnetic field, considering two different model parametrizations, and compare our numerical results to those obtained in other theoretical approaches and in LQCD calculations.
© The Authors, published by EDP Sciences, 2017
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