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SUMMARY:Sotaro Sugishita (Yukawa Institute)
DTSTART:20230823T163000Z
DTEND:20230823T180000Z
DTSTAMP:20260423T023008Z
UID:UKYhepth/60
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UKYhepth/60/
 ">Dress code for infrared safe scattering in QED</a>\nby Sotaro Sugishita 
 (Yukawa Institute) as part of Theoretical Physics Seminars (Kentucky)\n\nL
 ecture held in CP 303.\n\nAbstract\nWe consider the infrared (IR) aspects 
 of S-matrix in QED. We will review IR divergences and their relation to th
 e asymptotic symmetry in QED\, and introduce the dressed state formalism t
 o obtain IR-safe S-matrix elements. We show a generic condition (dress cod
 e) for dressed states to obtain IR-safe S-matrix elements\, and explain th
 at the dress code can be interpreted as the memory effect and represents t
 he superselection rule of asymptotic symmetry.\n
LOCATION:https://researchseminars.org/talk/UKYhepth/60/
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