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We present a holographic perspective on momentum transport in stronglycoupled, anisotropic non-Abelian plasmas in the presence of strong magneticfields. We compute the anisotropic heavy quark drag forces and Langevindiffusion coefficients and also the anisotropic shear viscosities for twodifferent holographic models, namely, a top-down deformation of stronglycoupled $\mathcal{N} = 4$ Super-Yang-Mills (SYM) theory triggered by anexternal Abelian magnetic field, and a bottom-up Einstein-Maxwell-dilaton (EMD)model which is able to provide a quantitative description of lattice QCDthermodynamics with $(2+1)$-flavors at both zero and nonzero magnetic fields.We find that, in general, energy loss and momentum diffusion through stronglycoupled anisotropic plasmas are enhanced by a magnetic field being larger intransverse directions than in the direction parallel to the magnetic field.Moreover, the anisotropic shear viscosity coefficient is smaller in thedirection of the magnetic field than in the plane perpendicular to the field,which indicates that strongly coupled anisotropic plasmas become closer to theperfect fluid limit along the magnetic field. We also present, in the contextof the EMD model, holographic predictions for the entropy density and thecrossover critical temperature in a wider region of the $(T,B)$ phase diagramthat has not yet been covered by lattice simulations. Our results for thetransport coefficients in the phenomenologically realistic magnetic EMD modelcould be readily used as inputs in numerical codes for magnetohydrodynamics.

Momentum transport in strongly coupled anisotropic plasmas in the presence of strong magnetic fields