At strong coupling (rs around 16 to 28), the nine-moment model predicts that the ion stopping power splits into two peaks and the friction function deviates from linear behavior, a signature of roton-like collective modes.
Estimates of the dynamic struc- ture factor for the finite temperature electron liquid via ana- lytic continuation of path integral monte carlo data,
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Modification of the uniform electron gas polarizational stopping power due to the interaction of the projectile with new collective modes at moderate and strong coupling
At strong coupling (rs around 16 to 28), the nine-moment model predicts that the ion stopping power splits into two peaks and the friction function deviates from linear behavior, a signature of roton-like collective modes.