Amplification of magnetic field effects <i>via</i> critical dynamics in a nonlinear oscillatory system.

ABSTRACT: Weak magnetic fields are known to modulate circadian rhythms in living systems, yet the chemical basis of their influence on oscillatory dynamics remains unresolved. This is a paradox given the negligible energies of the magnetic interactions (∼10^-2 kJ mol^-1 T^-1) relative to thermal noise. Using the Briggs-Rauscher reaction as a model system, we show that applied magnetic fields (0-200 mT) induce an unprecedented amplification of oscillatory behavior via critical dynamics close to a Hopf bifurcation, driving 12% enhancement in reaction rate while 1500% enhancement in oscillation amplitudes of key intermediates (Mn²⁺ and I^-). Simulations using the de Kepper-Epstein model for the inherent non-linearity of feedback-driven oscillati

SUBMITTER: Zhang S 

PROVIDER: S-EPMC12434406 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature