Abstract
A meshlike energy structure of collective intersubband excitations and damped collective energy level crossings are predicted for electrons confined on a cylindrical graphitic nanotube. Unusual Kohn anomalies, besides 2${\mathit{k}}_{\mathit{F}}$, are found for nanotubes. Multipole collective excitations are obtained for ${\mathrm{C}}_{60}$ and related quasispherical fullerenes, and the results are in excellent agreement with available experimental measurements.
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