Dresden 2026 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 7: Poster Session I
BP 7.39: Poster
Montag, 9. März 2026, 15:00–17:00, P5
The nature of correlations in the fractional Kelvin-Voigt model — •Dorian Marx1, Raffaele Mendozza2, Till Moritz Münker1, Peter Sollich2, and Timo Betz1 — 1Third Institute of Physics - Biophysics, Georg-August-University Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany — 2Institute for Theoretical Physics, Georg-August-University Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
The inside of cells is a complex, non-equilibrium system. We are interested in the mechanics of this intracellular space, which typically are phenomenologically well described by a complex double-power law (fractional Kelvin-Voigt model). There have been multiple studies on intra- and extracellular systems using different measurement methods that indicated a correlation in the model parameters. We present an analytical and numerical analysis of the complex double-power law model, uncovering the nature of such a correlation and its dependency on measured frequency range. This results in a tool to judge experimental findings and to discern significant, possibly meaningful correlations from those stemming from the nature of the model. As complex double-power law models (or a subclass of them) seem to continue being used in the study of intracellular mechanics, we expect this theoretical investigation to be relevant going forward.
Keywords: Intracellular mechanics; Fractional Kelvin-Voigt model; Correlation