Global ETD Search
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Showing 1 to 7 of 7 for “"relaxational dynamics"”.
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Dynamic Critical Phenomena of the Superconducting Transition
… Carlo time to real time is believed to reproduce relaxational dynamics, but this is found not to be the case for the vortex loop model. A generalization of the standard Monte Carlo algorithm is proposed to deal with situations where the assumption breaks down, the study of which is ongoing.
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Approach to equilibrium in systems with continuous symmetries
… quenched systems with continuous symmetry, whose relaxational dynamics is dominated by topological defects. The general aspects of the problem are discussed in chapter 1. In chapters 2 and 3, we report the results of two and three dimensional simulations of a simple model with non-conserved order …
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Equilibration of deep neural networks and carrier chirality in Rashba systems
… optimisation of the network as its equilibration dynamics. Using landscape exploration tools developed in theoretical chemistry, we resolve the structure of the loss function landscape, from which we can draw conclusions for the relaxational dynamics of typical optimisers and, consequently, for …
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Non-equilibrium dynamics in three-dimensional magnetic spin models and molecular motor-inspired one-dimensional exclusion processes
We investigate the relaxation dynamics of two distinct non-equilibrium processes: relaxation of three-dimensional antiferromagnetic lattice spin models with Heisenberg interaction following a critical quench, and a one-dimensional exclusion process inspired by the gear-like motion of molecular …
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Approach to equilibrium in systems with continuous symmetries
… quenched systems with continuous symmetry, whose relaxational dynamics is dominated by topological defects. The general aspects of the problem and relevant theoretical, numerical and experimental results from the literature are discussed in chapter 1. In chapters 2 and 3, I report the results of …
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Wärmeleitfähigkeit von 4 He in der Nähe des superfluiden Phasenübergangs in begrenzter Geometrie
… Only a few theoretical results exist about the dynamics of finite systems. These results are either restricted to surface effects or to non-physical periodic boundary conditions and systems with simple relaxational dynamics, which are not applicable to 4He. Experimental results of the thermal …
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The Dynamics of Molecular Glasses Studied by Light Scattering
The present work is devoted to studying the dynamics in molecular glass formers applying the light-scattering (LS) technique, in particular tandem Fabry-Perot interferometry which allows to cover the frequency range from 0.3 GHz to 1000 GHz. Chapters 4 to 7 each present, in a self-contained way, …