Starts 4 Jun 2019 14:00
Ends 4 Jun 2019 15:00
Central European Time
Higher-order memory and inertia effects in Onsager-Machlup theory of stochastic fluctuations
ICTP
Common Area, 2nd floor, SISSA building
V. Beirut, 2
In two seminal papers [1, 2] Onsager and Machlup introduced the celebrated theory of stochastic fluctuations for thermodynamic systems.
Whereas their first contribution [1] proposes a variational principle that leads to a simple Langevin dynamics of first order in time, the second [2] extends this formalism to more complex systems that include inertia and memory effects via a second-order stochastic equation. I will present a higher-order generalization of the Onsager-Machlup theory and discuss its applications to equilibrium and nonequilibrium dynamics of currents.
[1] L. Onsager and S. Machlup, Phys. Rev. 91, pp. 1505-12, 1953.
[2] S. Machlup and L. Onsager, Phys. Rev. 91, pp. 1512-15, 1953.
Whereas their first contribution [1] proposes a variational principle that leads to a simple Langevin dynamics of first order in time, the second [2] extends this formalism to more complex systems that include inertia and memory effects via a second-order stochastic equation. I will present a higher-order generalization of the Onsager-Machlup theory and discuss its applications to equilibrium and nonequilibrium dynamics of currents.
[1] L. Onsager and S. Machlup, Phys. Rev. 91, pp. 1505-12, 1953.
[2] S. Machlup and L. Onsager, Phys. Rev. 91, pp. 1512-15, 1953.