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Plasmas in strong magnetic fields have been mainly studied in two distinctlimiting cases--that of weak and strong nonideality with very differentphysical properties. While the former is well described by the familiar theoryof Braginskii, the latter regime is closer to the behavior of a Coulomb liquid.Here we study in detail the transition between both regimes. We focus on theevolution of the dynamic structure factor of the magnetized one-componentplasma from weak to strong coupling, which is studied with first-principlemolecular dynamics simulations. The simulations show the vanishing of Bernsteinmodes and the emergence of higher harmonics of the upper hybrid mode across themagnetic field, a redistribution of spectral power between the two maincollective modes under oblique angles, and a suppression of plasmon dampingalong the magnetic field. Comparison with results from various models,including the random phase approximation, a Mermin-type dielectric function,and the Quasi-Localized Charge Approximation show that none of the theories iscapable of reproducing the crossover that occurs when the coupling parameter ison the order of unity. The findings are relevant to the scattering spectra,stopping power, and transport coefficients of correlated magnetized plasmas.

Dynamic structure factor of the magnetized one-component plasma: crossover from weak to strong coupling