Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.788272
Title: On interacting particles in 1D and 2D
Author: Hellier, Joshua Daniel Mason
ISNI:       0000 0004 8497 9198
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2019
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Abstract:
Diffusion processes are pretty ubiquitous across the natural world, so it is important to try to understand them. A system in which diffusion is being driven by concentration differences between boundary reservoirs is a simple example of a nonequilibrium statistical mechanics system. In this thesis, we study a model that has been hanging around the literature in one form or another for a long time: the Sticky Particle Model, or SPM. This is a very basic one-parameter exclusion model, in which particles move away from adjacent particles with a different rate to their normal free movement. We use a variety of techniques to analyse induced ow in this model, including a simple analytic mean-field theory, Monte Carlo calculations, and direct numerical analysis of the transition rate operator that specifies small versions of the system. During these investigations, we have discovered what we argue is a nonequilibrium phase transition between flow regimes at high and low values of our stickiness parameter; much of our work has gone into attempts to understand the nature of this apparent transition.
Supervisor: Ackland, Graeme ; Hermann, Andreas Sponsor: Engineering and Physical Sciences Research Council (EPSRC)
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.788272  DOI: Not available
Keywords: diffusion
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