BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Collective coordinates\, asymptotics and domain wall dynamics in f
 erromagnets - Jonathan Robbins (University of Bristol)
DTSTART:20191015T160000Z
DTEND:20191015T170000Z
UID:TALK131869@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:<i>The method of collective coordinates is a simple and widely
  used variational procedure for finding approximate solutions to many- or 
 infinite-dimensional\, possibly damped and driven\, Hamiltonian systems. T
 he approximate solutions are typically characterised by a small number of 
 time-dependent parameters\, which are understood to describe a small numbe
 r of activated modes. The simplicity of the method comes at a price\, howe
 ver\, as it does not allow a determination of how good (or bad) the approx
 imation is. In certain regimes\, asymptotic expansions can provide the req
 uisite estimates\, though they require more work.</i>  &nbsp\;  <i>This is
  illustrated for the problem of the motion of domain walls in ferromagnets
 . Domain walls are interfaces between differently oriented magnetic domain
 s\, and the dynamics of these interfaces under applied magnetic fields and
  currents is a problem of current physical and technological interest.</i>
   <br><br><br><br>
LOCATION:Seminar Room 2\, Newton Institute
END:VEVENT
END:VCALENDAR