Abstract

We apply a theory (Böhm et al 2006 AIP Conf. Proc. 850 111, 2007 Int. J. Mod. Phys. B 21 2055) developed recently on dynamic two-pair fluctuations to layered systems, such as electrons in semiconductor hetero-structures or He on graphite. The theory fulfils the zeroth and first frequency moment sum rule. Results are presented for the static effective particle–hole interaction, the dynamic structure function and the dispersion of the plasmon.

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