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BEGIN:VEVENT
DTSTAMP:20260919T231309Z
LAST-MODIFIED:20171013T195326Z
DTSTART:20171018T194500Z
DTEND:20171018T204500Z
UID:event1788@bu.edu
URL:http://physics.bu.edu/internal/events/show/1788
SUMMARY:"Yang-Mills Glueballs as Closed Bosonic Strings"
DESCRIPTION:Featuring Sergei Dubovsky\, New York University\n\nPart of the 
	HET Seminar Series.\n\nWe put forward the Axionic String Ansatz (ASA)\, whi
	ch provides a unified description for the worldsheet dynamics of confining 
	strings in pure Yang--Mills theory both in D=3 and D=4 space-time dimension
	s. The ASA is motivated by the excitation spectrum of long confining string
	s\, as measured on a lattice\, and by recently constructed integrable axion
	ic non-critical string models. According to the ASA\, pure gluodynamics in 
	3D is described by a non-critical bosonic string theory without any extra l
	ocal worldsheet degrees of freedom. We argue that this assumption fixes the
	 set of quantum numbers (spins\, P- and C-parities) of almost all glueball 
	states. We confront the resulting predictions with the properties of approx
	imately 1^2+2^2+3^2+5^2=39 lightest glueball states measured on a lattice a
	nd find a good agreement. On the other hand\, the spectrum of low lying glu
	eballs in 4D gluodynamics suggests the presence of a massive pseudoscalar m
	ode on the string worldsheet\, in agreement with the ASA and lattice data f
	or long strings.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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