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SUMMARY:The Cavity Shift of Electron g-2
DTSTART:20260707T070000Z
DTEND:20260707T083000Z
DTSTAMP:20260710T170700Z
UID:indico-event-417@indico.kias.re.kr
DESCRIPTION:Speakers: Kevin Zhou (UC Berkeley)\n\nTitle: The Cavity Shift 
 of Electron g-2\nSpeaker: Kevin Zhou\nAbstract:\nThe electron magnetic mom
 ent is the most precisely measured property of any fundamental particle. T
 hough its value in free space has been calculated very precisely\, in prac
 tice the electron is trapped within a conducting cavity\, which modifies t
 he mode structure of the electromagnetic field. In quantum electrodynamics
 \, the "cavity shift" is divergent\, but standard renormalization techniqu
 es are inapplicable as the cavity breaks all symmetries. I will show how o
 ne can use contour integration techniques to cancel the divergences analyt
 ically\, yielding the one-loop cavity shift for spherical and cylindrical 
 cavities. This result can improve the calibration of current and future g-
 2 experiments. Time permitting\, I will also discuss the subtleties of cal
 culating g-2 in the presence of background fields\, such as those of ultra
 light dark matter.\n\nhttps://indico.kias.re.kr/event/417/
LOCATION:Room 1423 (KIAS)
URL:https://indico.kias.re.kr/event/417/
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