We demonstrate that size fluctuations close to polymers critical point originate the non-Gaussian diffusion of their center of mass. Static universal exponents γ and ν - depending on the polymer topology, on the dimension of the embedding space, and on equilibrium phase - concur to determine the potential divergency of a dynamic response, epitomized by the center-of-mass kurtosis. Prospects in experiments and stochastic modeling brought about by this result are briefly outlined.
Polymers critical point originates Brownian non-Gaussian diffusion
Orlandini E.;Seno F.;Baldovin F.
2021
Abstract
We demonstrate that size fluctuations close to polymers critical point originate the non-Gaussian diffusion of their center of mass. Static universal exponents γ and ν - depending on the polymer topology, on the dimension of the embedding space, and on equilibrium phase - concur to determine the potential divergency of a dynamic response, epitomized by the center-of-mass kurtosis. Prospects in experiments and stochastic modeling brought about by this result are briefly outlined.File in questo prodotto:
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