No inverse magnetic catalysis in the QCD hard and soft wall models

Dudal, David; Granado, Diego R.; Mertens, Thomas G.

doi:10.1103/physrevd.93.125004

Cited by 85 publications

(121 citation statements)

References 169 publications

(325 reference statements)

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“…[55] has explored the effect of magnetic field on the deconfinement transition associated in holography with the transition to a geometry with a black hole. AdS/QCD style models concentrate on the mesonic physics rather than gluonic physics and some explorations of magnetic field have been made in [53,56]. Our work adds to this latter literature.…”

Section: Introductionsupporting

confidence: 49%

Inverse magnetic catalysis in bottom-up holographic QCD

2016

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We explore the effect of magnetic field on chiral condensation in QCD via a simple bottom up holographic model which inputs QCD dynamics through the running of the anomalous dimension of the quark bilinear. Bottom up holography is a form of effective field theory and we use it to explore the dependence on the coefficients of the two lowest order terms linking the magnetic field and the quark condensate. In the massless theory, we identify a region of parameter space where magnetic catalysis occurs at zero temperature but inverse magnetic catalysis at temperatures of order the thermal phase transition. The model shows similar non-monotonic behaviour in the condensate with B at intermediate T as the lattice data. This behaviour is due to the separation of the meson melting and chiral transitions in the holographic framework. The introduction of quark mass raises the scale of B where inverse catalysis takes over from catalysis until the inverse catalysis lies outside the regime of validity of the effective description leaving just catalysis.

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Section: Introductionsupporting

confidence: 49%

Inverse magnetic catalysis in bottom-up holographic QCD

2016

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“…Different from top-down approach, bottom-up holographic QCD starts from QCD phenomena and try to build up more realistic holographic models. In this approach, chiral phase transition has been studied in several different models [5,[58][59][60][61][62][63][64][65][66][67]. Most of these studies considered the case with equal quark masses for all quarks.…”

Section: Introductionmentioning

confidence: 99%

Chiral phase transition of QCD with N f = 2 + 1 flavors from holography

Huang

2017

J. High Energ. Phys.

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Chiral phase transition for three-flavor N f = 2 + 1 QCD with m u = m d = m s is investigated in a modified soft-wall holographic QCD model. Solving temperature dependent chiral condensates from equations of motion of the modified soft-wall model, we extract the quark mass dependence of the order of chiral phase transition in the case of N f = 2 + 1, and the result is in agreement with the "Columbia Plot", which is summarized from lattice simulations and other non-perturbative methods. First order phase transition is observed around the three flavor chiral limit m u/d = 0, m s = 0, while at sufficient large quark masses it turns to be a crossover phase transition. The first order and crossover regions are separated by a second order phase transition line. The second order line is divided into two parts by the m u/d = m s line, and the m s dependence of the transition temperature in these two parts are totally contrast, which might indicate that the two parts are governed by different universality classes.

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“…First, one could interpret the decrease of T c as a function of B in terms of a "deconfinement catalysis", a point of view which is suggested also by recent model computations [61][62][63]. Moreover, the modification of the confining properties might have important consequences for the suppression of heavy quark bound states in the thermal medium produced in non-central heavy ion collisions.…”

Section: Results At Finite Temperaturementioning

confidence: 99%