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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…

High Energy Physics - Phenomenology · Physics 2016-10-26 Nick Evans , Carlisson Miller , Marc Scott

We investigate the effects of anisotropy on the chiral condensate in a holographic model of QCD with a fully backreacted quark sector at vanishing chemical potential. The high temperature deconfined phase is a neutral and anisotropic plasma…

High Energy Physics - Theory · Physics 2020-08-05 Umut Gursoy , Matti Jarvinen , Govert Nijs , Juan F. Pedraza

We study the effect of magnetic field $B$ on the critical temperature $T_{c}$ of the confinement-deconfinement phase transition in hard-wall AdS/QCD, and holographic duals of flavored and unflavored $\mathcal{N}=4$ super-Yang Mills theories…

High Energy Physics - Theory · Physics 2015-05-28 Kiminad A. Mamo

In this paper, we study the influence of an external magnetic field in holographic QCD models where the backreaction is modeled in via an appropriate choice of the background metric. We add a phenomenological soft wall dilaton to…

High Energy Physics - Theory · Physics 2016-06-08 D. Dudal , D. R. Granado , T. G. Mertens

We investigate the effect of a non-zero magnetic field on the chiral condensate using a holographic QCD approach. We extend the model proposed by Iatrakis, Kiritsis and Paredes in arXiv:1010.1364 that realises chiral symmetry breaking…

High Energy Physics - Theory · Physics 2020-12-02 Alfonso Ballon-Bayona , Jonathan P. Shock , Dimitrios Zoakos

We study the chiral phase transition in a magnetic field at finite temperature and chemical potential within the Sakai-Sugimoto model, a holographic top-down approach to (large-N_c) QCD. We consider the limit of a small separation of the…

High Energy Physics - Theory · Physics 2011-03-18 Florian Preis , Anton Rebhan , Andreas Schmitt

We propose a physical mechanism for inverse magnetic catalysis, the suppression of the chiral condensate by an external magnetic field in QCD around the critical temperature. We show that this effect, seen in lattice simulations, is a…

High Energy Physics - Lattice · Physics 2013-11-14 Falk Bruckmann , Gergely Endrodi , Tamas G. Kovacs

Two-color lattice QCD with N_f=4 staggered fermion degrees of freedom (no rooting trick is applied) with equal electric charge q is studied in a homogeneous magnetic background field B and at non-zero temperature T. In order to circumvent…

High Energy Physics - Lattice · Physics 2014-04-02 E. -M. Ilgenfritz , M. Muller-Preussker , B. Petersson , A. Schreiber

Magnetic catalysis is the enhancement of a condensate due to the presence of an external magnetic field. Magnetic catalysis at $T=0$ is a robust phenomenon in low-energy theories and models of QCD as well as in lattice simulations. We…

High Energy Physics - Phenomenology · Physics 2021-06-08 Jens O. Andersen

We study the behavior of strongly interacting matter under an external constant magnetic field in the context of nonlocal chiral quark models within the mean field approximation. We find that at zero temperature the behavior of the quark…

High Energy Physics - Phenomenology · Physics 2017-02-22 V. P. Pagura , D. Gomez Dumm , S. Noguera , N. N. Scoccola

We study the chiral symmetry breaking and restoration in $ (2+1) $-dimensional gauge theories from the holographic hard and softwall models. We describe the behavior of the chiral condensate in the presence of an external magnetic field for…

High Energy Physics - Theory · Physics 2018-11-13 Diego M. Rodrigues , Danning Li , Eduardo Folco Capossoli , Henrique Boschi-Filho

Magnetic effects on chiral phase transition have been investigated in a modified soft-wall AdS/QCD model, in which the dilaton field is taken to be negative at the ultraviolet region and positive at the infrared region as in…

High Energy Physics - Theory · Physics 2017-03-08 Danning Li , Mei Huang , Yi Yang , Pei-Hung Yuan

We investigate the phase diagram of QCD-like gauge theories at strong coupling at finite magnetic field $B$, temperature $T$ and baryon chemical potential $\mu$ using the improved holographic QCD model including the full backreaction of the…

High Energy Physics - Theory · Physics 2018-06-20 Umut Gursoy , Matti Jarvinen , Govert Nijs

We investigate the QCD phase diagram at zero chemical potential and finite temperature in the presence of an external magnetic field within the three flavor Polyakov-Nambu-Jona-Lasinio and entangled Polyakov-Nambu-Jona-Lasinio models…

High Energy Physics - Phenomenology · Physics 2015-08-10 Constança Providência , Márcio Ferreira , Pedro Costa

We review the holographic approach to electromagnetic phenomena in large N QCD. After a brief discussion of existing holographic models, we concentrate on the improved holographic QCD model extended to include magnetically induced…

High Energy Physics - Theory · Physics 2021-08-18 Umut Gursoy

We investigate the effects of strong magnetic fields on the QCD phase structure at vanishing density by solving the gluon and quark gap equations, and by studying the dynamics of the quark scattering with the four-fermi coupling. The chiral…

High Energy Physics - Phenomenology · Physics 2015-05-14 Niklas Mueller , Jan M. Pawlowski

In this paper, we consider the Einstein-Maxwell-dilaton holographic model for light quarks with nonzero magnetic field and chemical potential. First, we study the phase diagrams in $T-\mu$ and $T-B$ planes. We observe inverse magnetic…

High Energy Physics - Phenomenology · Physics 2024-09-16 Zhou-Run Zhu , Defu Hou

The QCD phase diagram at zero chemical potential and finite temperature subject to an external magnetic field is studied within the three flavor Nambu--Jona-Lasinio (NJL) model and the NJL model with the Polyakov loop (PNJL). A scalar…

High Energy Physics - Phenomenology · Physics 2014-06-25 M. Ferreira , P. Costa , O. Lourenço , T. Frederico , C. Providência

We discuss the phenomenon of (inverse) magnetic catalysis for both the deconfinement and chiral transition. We discriminate between the hard and soft wall model, which we suitably generalize to include a magnetic field. Our findings show a…

High Energy Physics - Theory · Physics 2017-04-05 David Dudal , Diego Rocha Granado , Thomas G. Mertens

We construct the gravitational solution of the Witten-Sakai-Sugimoto model by introducing a magnetic field on the flavor brane. With taking into account their backreaction, we re-solve the type IIA supergravity in the presence of the…

High Energy Physics - Theory · Physics 2017-10-04 Si-wen Li , Tuo Jia
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