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VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:The life of a vortex knot: Linking coiling and twisting across sca
 les
DTSTART:20150427T161500
DTEND:20150427T171500
DTSTAMP:20260427T221730Z
UID:5d97f311cd0060b25995866a6006821f4eca80bfe26b66cfc5f424b1
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. William Irvine\, University of Chicago\nCan you take a v
 ortex loop - akin to a smoke ring in air - and tie it into a knot or a lin
 k? The possibility of such knottiness in a fluid has fascinated physicists
  and mathematicians ever since Kelvin’s 'vortex atom' hypothesis\, in wh
 ich the atoms of the periodic table were hypothesized to correspond to clo
 sed vortex loops of different knot types.  More recently\, the knottiness
  (Helicity) of a fluid has re-emerged as a conserved quantity in many idea
 lized situations (such as Euler fluids and ideal plasmas) offering the pot
 ential for new fundamental insights. In the real physical counterparts to 
 these systems progress has however been hindered by lack of accessible exp
 erimental systems. I will tell of how to make a vortex knot and link in wa
 ter\, in the wave function of a superfluid (on a computer) and of what hap
 pens thence. In particular I will talk about how linking coiling and twist
 ing interplay across scales.
LOCATION:Room CE1 http://plan.epfl.ch/?zoom=20&recenter_y=5864182.50561&re
 center_x=731299.44535&layerNodes=fonds\,batiments\,labels\,information\,pa
 rkings_publics\,arrets_metro\,transports_publics&floor=1&q=ce1
STATUS:CONFIRMED
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