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Critical behaviour of directed percolation process in the presence of compressible velocity field
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 40 credits / 60 HE creditsStudent thesis
Abstract [en]

Renormalization group analysis is a useful tool for studying critical behaviour of stochastic systems. In this thesis, field-theoretic renormalization group will be applied to the scalar model representing directed percolation, known as Gribov model, in presence of the random velocity field. Turbulent mixing will be modelled by the compressible form of stochastic Navier-Stokes equation where the compressibility is described by an additional field related to the density. The task will be to find corresponding scaling properties.

Place, publisher, year, edition, pages
2017. , 118 p.
Keyword [en]
fully developed turbulence, directed percolation, field-theoretic renormalization group, anomalous scaling
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:su:diva-144061OAI: oai:DiVA.org:su-144061DiVA: diva2:1107596
Presentation
2017-05-24, A4:1003, Roslagstullsbacken 21, Stockholm, 10:00 (English)
Supervisors
Examiners
Available from: 2017-06-12 Created: 2017-06-09 Last updated: 2017-06-12Bibliographically approved

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fulltext(5255 kB)43 downloads
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