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Anisotropic string tensions and inversely magnetic catalyzed deconfinement from a dynamical AdS/QCD model. (English) Zbl 1435.81236

Summary: We extend previous work on dynamical AdS/QCD models by introducing an extra ingredient under the form of a background magnetic field, this to gain insight into the influence such field can have on crucial QCD observables. Therefore, we construct a closed form analytic solution to an Einstein-Maxwell-dilaton system with a magnetic field. We specifically focus on the deconfinement transition, reporting inverse magnetic catalysis, and on the string tension, reporting a weaker/stronger confinement along/perpendicular to the magnetic field. The latter, being of importance to potential modelling of heavy quarkonia, is in qualitative agreement with lattice findings.

MSC:

81V05 Strong interaction, including quantum chromodynamics
83E15 Kaluza-Klein and other higher-dimensional theories

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