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SUMMARY:Composite degrees of freedom and elevation of supersymmetry in 2+1
  dimensions - Jean Alexandre [King's College London]
DTSTART:20091125T141500Z
DTEND:20091125T151500Z
UID:TALK21349@talks.cam.ac.uk
CONTACT:Francis Bursa
DESCRIPTION:I will start with motivations for field theory in 2+1 dimensio
 ns\, among which one can find relativistic-like effective descriptions of 
 planar antiferromagnets. I will then explain how and why supersymmetry can
  be elevated from N=1 to N=2\, and will use these results to describe an e
 ffective description of high-Tc superconductivity in terms of composite de
 grees of freedom\, made of spinons and holons. 
LOCATION:MR3\, Centre for Mathematical Sciences
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