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UID:20260729T022411EDT-1514Ar8w3F@132.216.98.100
DTSTAMP:20260729T062411Z
DESCRIPTION:Title: Viscosity limits for 0th order operators\n	Abstract: In r
 ecent work\, Colin de Verdiere--Saint-Raymond and Dyatlov--Zworski showed 
 that a class of zeroth order pseudodifferential operators coming from expe
 riments on forced waves in fluids satisfies a limiting absorption principl
 e. Thus\, these operators have absolutely continuous spectrum with possibl
 y finitely many embedded eigenvalues. In this talk\, we discuss the effect
  of small viscosity on the spectra of these operators\, showing that the s
 pectrum of the operator with small viscosity converges to the poles of a c
 ertain meromorphic continuation of the resolvent through the continuous sp
 ectrum. In order to do this\, we introduce spaces based on an FBI transfor
 m which allows for the testing of microlocal analyticity properties. This 
 talk is based on joint work with M. Zworski.\n\n \n\nfor zoom meeting info
 rmation please contact dmitry.jakobson [at] mcgill.ca\n
DTSTART:20200522T150000Z
DTEND:20200522T160000Z
SUMMARY:Jeff Galkowski (UCL)
URL:https://www.mcgill.ca/mathstat/channels/event/jeff-galkowski-ucl-322214
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