Loschmidt's paradox is seen as solved
This thesis deals in the most extreme context with the fundamental differences between continuum and particle physics. In this context, the differences and incompatibilities are discussed in particular. The molecular dynamics simulation serves as concrete examples in particle physics and the non-equilibrium behavior of non-magnetic rigid polar fluids in continuum physics. For the molecular dynamics simulations it is shown on the one hand how the requirements of strict particle physics have to be given up in order to do justice to most of the experiments and in a similar way in order to be able to apply numerics. Like particle physics, continuum physics is briefly introduced in order to then model polar fluids. The aim of this model is to develop an explanation for the Debye process in monohydric alcohols. In particular, Classical Irreversible Thermodynamics is used for modeling. Step by step, the treated model is expanded to include additional effects. At the beginning only polarization processes are described macroscopically, until finally chemical reactions and the angular momentum are coupled with them on a mesoscopic scale. The first model is solved analytically in various asymptotics, that is, concrete boundary value problems are calculated. In addition, all models are solved numerically and the interesting solutions are presented. Finally, the Loschmidt paradox is dealt with, which shows the incompatibility of particle and continuum physics.
This thesis deals with the fundamental differences between particle physics and continuum physics at its outmost scope. In this regard the differences and the incommensurate properties of these domains are discussed. The model of molecular dynamics simulation serves as a specific example for particle physics, whereas modeling of non-equilibrium processes in unmagnetic rigid polar fluids serves as a specific example for continuum physics. For molecular dynamics simulations it is shown how the constraints of Particle physics theory cannot be kept if one desires to calculate numerical results and do simulations comparable to experiments. After that discussion of particle physics the continuum physics theory is presented and followed by incremental modeling of polar fluids. The aim of this modeling is to find an explanatory model for the Debye process in monohydroxy alcohols. Especially Classical Irreversible Thermodynamics is being used to develop this model. The model is extended step by step, starting with coupling of macroscospic polarization processes, going over to including chemical reactions and diffusion, until finally angular momentum is being coupled with the former on a mesoscopic scale. The first model is treated analytical in its asymptotic limits, where boundary value problems are solved. Furthermore these models are also treated numerically and the interesting solutions are presented. In the end the thesis explains the Loschmidt-Paradox, which defines an incommensurateness of particle and continuum physics.
05 Department of Physics> Institute for condensed matter physics> Molecular dynamics in condensed matter
05 Department of Physics> Institute for condensed matter physics> Statistical physics and complex systems
05 Department of Physics> Institute for condensed matter physics> Polymer dynamics, hydrodynamic interactions, electrokinetics, computer simulation methods
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