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DTSTAMP:20260919T045223Z
LAST-MODIFIED:20150213T195618Z
DTSTART:20150225T200000Z
DTEND:20150225T210000Z
UID:event1409@bu.edu
URL:http://physics.bu.edu/internal/events/show/1409
SUMMARY:Soft Theorems from Effective Field Theory
DESCRIPTION:Featuring Andrew Larkoski\, MIT\n\nPart of the HET Seminar Seri
	es.\n\nAbstract:\nThe singular limits of massless gauge theory amplitudes a
	re described by an effective theory\, called soft-collinear effective theor
	y (SCET). Using the power of SCET we analyze in detail the subleading soft 
	limit of amplitudes in gauge theory. At tree-level\, the subleading soft re
	sult is given by the Low-Burnett-Kroll theorem\, with the angular momentum 
	operator acting on a lower-point amplitude.  At higher orders in perturbati
	on theory\, the Low-Burnett-Kroll theorem is explicitly broken by on-shell 
	corrections.  The effective theory correctly describes soft emissions to al
	l orders in perturbation theory\, generalizing the Low-Burnett-Kroll theore
	m.  These applications are presented in a manner that illustrates the wider
	 utility of using effective theory techniques to understand the perturbativ
	e S-matrix.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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