Berlin 2008 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Poster II

DY 29.28: Poster

Thursday, February 28, 2008, 16:00–18:00, Poster C

Spectra of Husimi cacti: Exact Results and Applications — •mircea galiceanu and alexander blumen — Theoretische Polymerphysik, Universität Freiburg, Hermann-Herder-Straβe 3, D-79104 Freiburg, Germany

We determine analytically the complete spectra of the Husimi cacti, which are dual structures to the dendrimers, but, distinct from these, contain loops. Our solution makes use of a judicious analysis of the normal modes [1]. Although close to those of dendrimers, the spectra of Husimi cacti differ. From the wealth of applications for measurable quantities which depend only on the spectra, we display for Husimi cacti the behavior of the fluorescence depolarisation under quasi-resonant Förster energy transfer and the loss and storage moduli.

[1] Galiceanu M. and Blumen A., J. Chem. Phys., 127, 134904 (2007)