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SUMMARY:From Crystal Optics to Dirac Operators--A Spectral Theory - Ben-Ar
 tzi\, M (Hebrew University of Jerusalem)
DTSTART:20120802T150000Z
DTEND:20120802T154500Z
UID:TALK39154@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:A unified approach to first-order systems of classical physics
  is presented. Dirac operators are included\, but there is no need for the
  fact that the square is the Laplacian (+ constant). The main tool is a de
 rivation of the Limiting Absorption Principle\, using the geometry of the 
 characteristic surfaces and the trace lemma. As an application\, global sp
 acetime estimates are derived\, in weighted Sobolev spaces.\n
LOCATION:Seminar Room 1\, Newton Institute
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