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BEGIN:VEVENT
DTSTAMP:20260814T234524Z
LAST-MODIFIED:20171219T164245Z
DTSTART:20171220T153000Z
DTEND:20171220T163000Z
UID:event1870@bu.edu
URL:http://physics.bu.edu/internal/events/show/1870
SUMMARY:Constraints on Flavored 2d CFT Partition Functions
DESCRIPTION:Featuring Yuan Xin\n\nPart of the Preliminary Oral Exam.\n\nExa
	mining Committee:  Liam Fitzpatrick\, Ami Katz\, Robert Carey\, Christopher
	 Laumann\n\nAbstract:\n\nConformal Field Theory (CFT) relates to many open 
	questions in high-energy physics and condensed matter theory\, and brings u
	s important insights into Quantum Gravity via the AdS/CFT correspondence. T
	he conformal bootstrap is a powerful approach to CFT that allows one to stu
	dy such theories beyond the weakly coupled regime\, using only basic univer
	sal principles. In this project\, we perform a bootstrap analysis on all 2 
	dimensional CFTs with a conserved charge\, using the transformation law for
	 the modular transformation of the CFT’s partition function in the presen
	ce of a chemical potential\, i.e. flavored partition function. First\, we u
	se this law to put constraints on the CFT’s "mass-to-charge" ratio\, as w
	ell as the weight of charged states in the theory. Then\, we apply the extr
	emal functional method to extract the partition functions of the CFTs that 
	saturate the bounds. In several cases we find the prediction of the occupat
	ion numbers are precisely integers\, which is necessary for a physical theo
	ry. Our bounds provide a solid proof of the 3-dimensional Quantum Gravity c
	ase of the Weak Gravity Conjecture\, and we find some previously inaccessib
	le partition functions.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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