Deconfinement and Chiral Symmetry Restoration in a Strong Magnetic Background

By R. Gatto, M. Ruggieri. 2010

142 citations recorded by the source corpus.

We perform a model study of deconfinement and chiral symmetry restoration in a strong magnetic background. We use a Nambu-Jona-Lasinio model with the Polyakov loop, taking into account a possible dependence of the coupling on the Polyakov-loop expectation value, as suggested by the recent literature. Our main result is that, within this model, the deconfinement and chiral crossovers of QCD in strong magnetic field are entangled even at the largest value of eB considered here, namely eB=30m{sub {pi}}{sup 2} (that is, B{approx_equal}6x10{sup 15} T). The amount of split that we measure is, at this value of eB, of the order of 2%. We also study briefly the role of the 8-quark term on the entanglement of the two crossovers. We then compare the phase diagram of this model with previous results, as well as with available lattice data.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/09db10785763b5f4a1ea1682e886df6566a249f1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Inverse magnetic catalysis in dense holographic matter (2010, background): “[ 53 ]), but has not been seen in lattice QCD calculations [54].”
The QCD phase diagram for external magnetic fields (2011, result): “Similar conclusions with respect to the increase in Tc and in the strength of the transitions were drawn from studies of the Nambu-Jona-Lasinio model and extended versions thereof, like the EPNJL and PNJL8 models [15, 16], see also [17], and the nonlocal PNJL model [18].”
Magnetic Catalysis: A Review (2012, background): “Because of a poorly understood interplay between the dynamics responsible for the quark (de-)confinement on the one han d and the magnetic catalysis on the other, there are a lot of uncertainties abou t the precise role of the magnetic field in this case [121, 144, 2, 25, 146, 67, 68, 69, 77 , 78, 3”
Inverse magnetic catalysis and the Polyakov loop (2013, result): “We note that previously in the PNJL model [52] and also in lattice simulations with larger-thanphysical quark masses [18] the Polyakov loop was observed to decrease with the magnetic field, and the transition temperature was shifted up by B.”