O původu nevratných procesů
|Thesis title in Czech:||O původu nevratných procesů|
|Thesis title in English:||On the origin of irreversible processes|
|Key words:||Nevratnost, entropie, disipace, hamiltonovská evoluce, samoregularizace|
|English key words:||Irreversibility, entropy, dissipation, Hamiltonian evolution, self-regularization|
|Academic year of topic announcement:||2018/2019|
|Type of assignment:||diploma thesis|
|Department:||Mathematical Institute of Charles University (32-MUUK)|
|Supervisor:||RNDr. Michal Pavelka, Ph.D.|
|1) Formulation of classical mechanics, rigid body motion and reversible fluid mechanics in the Hamiltonian setting (using a Poisson bracket).
2) Self-regularization of classical mechanics using the approach from . Numerical examples.
3) Self-regularization of rigid body motion using the approach from . Numerical examples.
4) Self-regularization of fluid mechanics using the approach from . Numerical examples.
5) Discussion of Landau damping .
6) Discussion of the origin of the second law of thermodynamics comparing  and .
| Michal Pavelka, Václav Klika and Miroslav Grmela, Statistical mechanics of Landau damping, Submitted to Entropy (2018)
|Preliminary scope of work in English|
|Hamilton canonical equations, which describe evolution within classical mechanics, are completely reversible. Assuming that macroscopic systems around us can be approximated as systems of classical particles, evolution of the systems can be also described by reversible classical mechanics.
On the other hand, processes that the macroscopic systems undergo are typically irreversible (friction, diffusion, temperature equilibration, etc.). The question is from where this irreversibility comes from. Why does entropy of an isolated system grow in time? What is the reason behind the second law of thermodynamics?