H 2 An introduction to molecular dynamics

Auteurs : Stoltz, Gabriel (Auteur de la Conférence)
CIRM (Editeur )

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computational statistical physics thermodynamic ensemble sampling probability measures Fokker-Planck equation ergodicity of stochastic differential equations discretization of stochastic differential equations metastability overdamped Langevin dynamics Langevin dynamics discretization of the Langevin dynamics computation of transport coefficients linear response autodiffusion and mobility error estimates on transport coefficients

Résumé : The aim of this two-hour lecture is to present the mathematical underpinnings of some common numerical approaches to compute average properties as predicted by statistical physics. The first part provides an overview of the most important concepts of statistical physics (in particular thermodynamic ensembles). The aim of the second part is to provide an introduction to the practical computation of averages with respect to the Boltzmann-Gibbs measure using appropriate stochastic dynamics of Langevin type. Rigorous ergodicity results as well as elements on the estimation of numerical errors are provided. The last part is devoted to the computation of transport coefficients such as the mobility or autodiffusion in fluids, relying either on integrated equilibrium correlations à la Green-Kubo, or on the linear response of nonequilibrium dynamics in their steady-states.

Codes MSC :
60H10 - Stochastic ordinary differential equations
65C30 - Stochastic differential and integral equations
82B31 - Stochastic methods
82B80 - Numerical methods in equilibrium statistical mechanics
82C31 - Stochastic methods in time-dependent statistical mechanics (Fokker-Planck, Langevin, etc.)
82C70 - Transport processes

    Informations sur la Vidéo

    Langue : Anglais
    Date de publication : 27/11/14
    Date de captation : 18/11/14
    Sous collection : Research talks
    arXiv category : Numerical Analysis ; Analysis of PDEs ; Probability
    Domaine : Numerical Analysis & Scientific Computing ; PDE ; Probability & Statistics
    Format : QuickTime (.mov) Durée : 01:57:50
    Audience : Chercheurs ; Doctorants , Post - Doctorants
    Download : https://videos.cirm-math.fr/2014-11-18_Stoltz.mp4

Informations sur la rencontre

Nom de la rencontre : MoMaS Conference / Colloque MoMaS
Organisateurs de la rencontre : Allaire, Grégoire ; Cances, Clément ; Ern, Alexandre ; Herbin, Raphaèle ; Lelièvre, Tony
Dates : 17/11/14 - 20/11/14
Année de la rencontre : 2014
URL Congrès : https://www.cirm-math.fr/Archives/?EX=in...

Citation Data

DOI : 10.24350/CIRM.V.18631103
Cite this video as: Stoltz, Gabriel (2014). An introduction to molecular dynamics. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.18631103
URI : http://dx.doi.org/10.24350/CIRM.V.18631103


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