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BEGIN:VEVENT
UID:a62766fcc115a52bc8045b8a917b27db
CATEGORIES:Mathematical Physics Seminar
CREATED:20201214T131232
SUMMARY:Michael Berry - Superoscillations in waves: old, new, common, uncommon
LOCATION:Zoom
DESCRIPTION:<p>Michael Berry - University of Bristol, UK`<br />"Superoscillations in wa
 ves: old, new, common, uncommon"<br />In physics, the mathematical phenomen
 on of superoscillations, in which functions vary faster than their fastest 
 Fourer components (‘faster than they should’), is associated with almost-de
 structive interference, and occurs near phase singularities in optics and o
 n the world’s ocean tides; and it is associated with quantum weak measureme
 nts. Superoscillations are a compact way to represent fractals. In light re
 presented by scalar waves, and in many contexts in quantum physics, superos
 cillations are rather common; but in light represented by electric fields -
  and more so when magnetic fields are included - they are unexpectedly rare
 . Differentiation suppresses superoscillations. There is superoscillatory s
 tructure near the flux in the Aharonov-Bohm wave. Superoscillations in red 
 light can escape as gamma radiation.</p>
CONTACT:Michael Berry
DTSTAMP:20260907T130911
DTSTART;TZID=America/New_York:20210106T104500
DTEND;TZID=America/New_York:20210106T114500
SEQUENCE:0
TRANSP:OPAQUE
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