Polymers critical point originates Brownian non-Gaussian diffusion
Sankaran Nampoothiri, Enzo Orlandini, Flavio Seno, Fulvio Baldovin
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.
Topics & Concepts
Statistical physicsCritical point (mathematics)Brownian motionDiffusionDimension (graph theory)Critical dimensionPhysicsPolymerCritical exponentPoint (geometry)EmbeddingStochastic processPosition (finance)Brownian dynamicsCritical phenomenaThermodynamicsAgrégationMathematicsDynamics (music)Classical mechanicsCondensed matter physicsStochastic modellingNoise (video)Stochastic dynamicsMathematical analysisstochastic dynamics and bifurcationRheology and Fluid Dynamics StudiesTheoretical and Computational Physics