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Research activities of the PhyStat group

par Clément Sire - 27 avril 2009

Toutes les versions de cet article : English , français

The Statistical Physics of Complex Systems group :

The PhyStat group addresses problems arising in a wide range of domains : condensed matter physics, fluid mechanics, biophysics, soft condensed matter physics, astrophysics, stochastic processes, computer sciences, game theory, probability theory, geometry, physics of society...

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Maxwell’s demon (by G. Gamow)
  • Out of equilibrium physics (dynamical phase transitions, phase separation, coarsening, glassy dynamics...)
  • Disordered systems (glass, granular systems, spin glasses, diffusion and absorption in random media, porous media...)
  • Physics of systems with long-range interactions (self-gravitating gas, turbulence in two dimensions and stratified fluids, kinetic theory of non-mixing systems, non-Boltzmannian quasi-stationary states, astrophysics...)
  • Biophysics and soft condensed matter (protein diffusion, electropermeabilization of membranes, biological engines, electrolytes, polymer and DNA dynamics, membranes ...)
  • Theory of probability and of stochastic processes and their applications (persistence, reaction-diffusion models, stochastic interfaces, chemotaxis, diffusion properties in biological systems, diffusion and absorption in random media, optimization problems...)
  • Physics of society (game theory & theory of competition, collective motion in animal and human groups...)

A few problems recently studied by the PhyStat group :

  • How salting DNA makes it more flexible ! (News article)
  • A model of collective fish behavior with cognitive and hydrodynamic interactions (News article)
  • How fish switch attention from neighbor to neighbor for seamless collective movement (News article)
  • How social information can improve estimation accuracy in human groups (News article)
  • Dependence of DNA Persistence Length on Ionic Strength of Solutions with Monovalent and Divalent Salts (News article)
  • Swarming, schooling, milling : phase diagram of a data-driven fish school model (News article)
  • Ionic Capillary Evaporation in Weakly Charged Nanopores (News article)
  • Why DNA denaturation bubble closure is so long ? (News article)
  • Drag forces in fluctuating fields (News article)
  • Why DNA chains are "kinked" when observed on surfaces ? (News article)
  • Theory of poker tournaments (News article in French / English,Article)
  • Denaturation bubbles in fluctuating DNA chains (Article, News article)
  • The statistics of critical points of Gaussian fields on large-dimensional spaces (Article)
  • Calculating the number of random matrices with a constrained spectrum (Article)
  • Probability distribution of the maximum of a random signal (News article)
  • How to reproduce bacterial propulsion in a biomimetic way ? (News article)
  • Gravitational collapse of a gas of Brownian particles (News article)
  • 2D Decaying turbulence (News article)
  • Configurational entropy of quasiperiodic tilings (News article)
  • Planetary formation in turbulent disks (News article)

Scientific reports and publications of the PhyStat group :