Deconfinement, chiral symmetry restoration and thermodynamics of (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math>)-flavor hot QCD matter in an external magnetic field

Ferreira, Márcio; Costa, Pedro; Providência, Constança

doi:10.1103/physrevd.89.036006

Cited by 43 publications

(15 citation statements)

References 65 publications

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“…However, the rate of this diminishing becomes smaller when the electric field starts to grow, showing a damped behavior. This behavior is analogous to what happens in the pure magnetic case [35][36][37][38][39][40][41]. However,when going into the strong field regime, Fig.…”

Section: Discussionsupporting

confidence: 73%

Catalysis and inverse electric catalysis in a scalar theory

Loewe,

Valenzuela,

Zamora

2021

Preprint

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In this article we explore the phase diagram associated to the symmetry breaking of a scalar self interacting theory, induced by temperature and the presence of an external electric field. For such purpose, first we obtain the boson propagator, in the presence of a constant external electric field, both in the weak and strong field strength limits. Novel expansions are derived for the effective potential, valid for the whole range of temperature. We found inverse electric catalysis for the weak field region, whereas for strong fields electric catalysis emerges, i.e. a situation where the critical temperature diminishes as function of the strength of the electric field. These behaviors, in the weak and strong intensity sectors, are valid for all possible values of temperature.

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Section: Discussionsupporting

confidence: 73%

Catalysis and inverse electric catalysis in a scalar theory

Loewe,

Valenzuela,

Zamora

2021

Preprint

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“…The qualitative behavior of the transition temperature for physical quark masses is in disagreement with model calculations using either the (Polyakov-loop extended) Nambu-Jona-Lasinio ((P)NJL) model or the (Polyakov-loop extended) quarkmeson model ((P)QM); in these models, the critical temperature is an increasing function of the magnetic field, see e.g. [10][11][12][13][14][15][16][17][18][19][20]. Possible resolutions to the disagreement have been suggested [21][22][23][24][25][26][27][28] and we will discuss these at the end of the paper.…”

Section: Introductionmentioning

confidence: 84%

Chiral and deconfinement transitions in a magnetic background using the functional renormalization group with the Polyakov loop

Andersen

Naylor

Tranberg

2014

J. High Energ. Phys.

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We use the Polyakov loop coupled quark-meson model to approximate low energy QCD and present results for the chiral and deconfinement transitions in the presence of a constant magnetic background B at finite temperature T and baryon chemical potential µ B . We investigate effects of various gluonic potentials on the deconfinement transition with and without a fermionic backreaction at finite B. Additionally we investigate the effect of the Polyakov loop on the chiral phase transition, finding that magnetic catalysis at low µ B is present, but weakened by the Polyakov loop.

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“…The inclusion of a magnetic field in the Lagrangian density of the NJL model and of the PNJL model allows describing the magnetic catalysis (MC) effect, i.e., the enhancement of the quark condensate due to the magnetic field [23][24][25][26], but does not describe the suppression of the quark condensate found in LQCD calculations at finite temperature and zero chemical potential which is due to the strong screening effect of the gluon interactions, the socalled inverse magnetic catalysis (IMC) [16][17][18]. In order to deal with this discrepancy, it was proposed that the model coupling, G s , can be seen as proportional to the running coupling, α s , and consequently, a decreasing function of the magnetic field strength allowing one to include its effects (α s ðeBÞ).…”

Section: Introductionmentioning

confidence: 99%

Influence of the inverse magnetic catalysis and the vector interaction in the location of the critical end point

et al. 2015

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The effect of a strong magnetic field on the location of the critical end point (CEP) in the QCD phase diagram is discussed under different scenarios. In particular, we consider the contribution of the vector interaction and take into account the inverse magnetic catalysis obtained in lattice QCD calculations at zero chemical potential. The discussion is realized within the (2 þ 1) Polyakov-Nambu-Jona-Lasinio model. It is shown that the vector interaction and the magnetic field have opposite competing effects, and that the winning effect depends strongly on the intensity of the magnetic field. The inverse magnetic catalysis at zero chemical potential has two distinct effects for magnetic fields above ≳0.3 GeV 2 : it shifts the CEP to lower chemical potentials, hinders the increase of the CEP temperature and prevents a too large increase of the baryonic density at the CEP. For fields eB < 0.1 GeV 2 the competing effects between the vector contribution and the magnetic field can move the CEP to regions of temperature and density in the phase diagram that could be more easily accessible to experiments.

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Deconfinement, chiral symmetry restoration and thermodynamics of (2+1)-flavor hot QCD matter in an external magnetic field

Cited by 43 publications

References 65 publications

Catalysis and inverse electric catalysis in a scalar theory

Catalysis and inverse electric catalysis in a scalar theory

Chiral and deconfinement transitions in a magnetic background using the functional renormalization group with the Polyakov loop

Influence of the inverse magnetic catalysis and the vector interaction in the location of the critical end point

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