BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:PDE/Analysis Seminar
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261009T200330Z
UID:tag:localist.com\,2008:EventInstance_48241138672724
DTSTART:20250211T200000Z
DTEND:20250211T210000Z
DESCRIPTION:Speakers: Alex Cohen (MIT)\n\nTitle: Ruling out periodicity in 
 quantum chaos \n\nAbstract: A central question in quantum chaos is to unde
 rstand the behavior of high-frequency Laplace eigenfunctions on hyperbolic
  manifolds. Quantum cat maps are a model system that behave hyperbolic man
 ifolds: the known tools apply equally well to both systems. However\, for 
 special parameter choices quantum cat maps exhibit a strange periodicity\,
  resulting in concentration of eigenfunctions—behavior not expected for 
 eigenfunctions on hyperbolic manifolds. We discuss new work distinguishing
  these two systems. The key ingredient is an uncertainty principle that di
 stinguishes the Fourier transform from a modified Fourier transform with n
 onlinear phase function.\n\nJoint with Semyon Dyatlov.
GEO:42.358262;-71.090045
LOCATION:Building 4\, 257
SUMMARY:PDE/Analysis Seminar
URL;VALUE=URI:https://calendar.mit.edu/event/copy-of-mit-pdeanalysis-semina
 r-4512
CATEGORIES:Conferences/Seminars/Lectures
END:VEVENT
END:VCALENDAR