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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Thermo-magnetic effects in quark matter: Nambu-Jona-Lasinio model constrained by lattice QCD

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Autor(es):
Farias, Ricardo L. S. ; Timteo, Varese S. ; Avancini, Sidney S. ; Pinto, Marcus B. ; Krein, Gasto
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: EUROPEAN PHYSICAL JOURNAL A; v. 53, n. 5 MAY 19 2017.
Citações Web of Science: 15
Resumo

The phenomenon of inverse magnetic catalysis of chiral symmetry in QCD predicted by lattice simulations can be reproduced within the Nambu-Jona-Lasinio model if the coupling G of the model decreases with the strength B of the magnetic field and temperature T. The thermo-magnetic dependence of G(B, T) is obtained by fitting recent lattice QCD predictions for the chiral transition order parameter. Different thermodynamic quantities of magnetized quark matter evaluated with G(B, T) are compared with the ones obtained at constant coupling, G. The model with G(B, T) predicts a more dramatic chiral transition as the field intensity increases. In addition, the pressure and magnetization always increase with B for a given temperature. Being parametrized by four magnetic-field-dependent coefficients and having a rather simple exponential thermal dependence our accurate ansatz for the coupling constant can be easily implemented to improve typical model applications to magnetized quark matter. (AU)

Processo FAPESP: 16/07061-3 - Teorias efetivas em sistemas hadrônicos de poucos e muitos corpos
Beneficiário:Varese Salvador Timoteo
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 13/01907-0 - Centro de Pesquisa e Análise de São Paulo
Beneficiário:Sergio Ferraz Novaes
Linha de fomento: Auxílio à Pesquisa - Temático