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BEGIN:VEVENT
DTSTAMP:20260626T003928Z
DTSTART;VALUE=DATE-TIME:20161020T130000
DTEND;VALUE=DATE-TIME:20161020T140000
SUMMARY:Theory Seminar: Alexander Taylor (Bristol)
TZID:Europe/London
UID:20161020-094d4345576c31f201578ed626902315@warwick.ac.uk
CREATED:20161004T083621Z
DESCRIPTION:Geometry and topology of vortices in random quantum eigenfunc
 tions Disordered complex 3D scalar wave fields typically contain a dense
  tangle of nodal lines (quantized vortices)\, which are important in div
 erse physical wave systems including turbulent superfluids\, optical vol
 ume speckle\, the quantum eigenfunctions of chaotic 3D cavities\, and li
 quid crystal phases. Based on extensive numerical simulations these noda
 l tangles are known to have fractal properties on large scales\, althoug
 h more subtle topological quantities such as the probability of knotted 
 or linked vortices are sensitive to the details of the model. We numeric
 ally generate many examples of wave chaos in three random systems at fix
 ed energy (3D cube with periodic boundary conditions\, 3-sphere and 3D h
 armonic oscillator)\, analysing aspects of their statistical geometry an
 d identifying the knot types of the vortex curves which appear. Knots te
 nd to occur with high probability even at comparatively low energies\, a
 nd the statistics of knot complexity vary significantly amongst the thre
 e systems. Furthermore\, the different symmetries and boundary condition
 s of these systems strongly affect the knotted conformations that can oc
 cur\, and we discuss how this relates to the statistics of knotting with
  mode count in different systems.
LOCATION:PS1.28
URL:http://www.bris.ac.uk/physics/people/alexander-j-taylor/index.html
ATTACH:http://www.bris.ac.uk/physics/people/alexander-j-taylor/index.html
 
CATEGORIES:Theory Seminar
LAST-MODIFIED:20161004T084020Z
ORGANIZER;CN=Gareth Alexander:
END:VEVENT
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