BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261018T061033Z
LAST-MODIFIED:20190618T165432Z
DTSTART:20190711T150000Z
DTEND:20190711T160000Z
UID:event2147@bu.edu
URL:http://physics.bu.edu/internal/events/show/2147
SUMMARY:Emergent Symmetry in a Quantum Clock Model
DESCRIPTION:Featuring Pranay Patil\n\nPart of the Departmental Seminars.\n\
	nDissertation Committee:  Anders Sandvik\, Claudio Chamon\, Emanuel Katz\, 
	Alex Sushkov\, David Campbell\n\n\nAbstract:\nWe propose a quantum clock mo
	del on the square lattice built out of a q-state classical clock model with
	 a quantum fluctuation (a generalization of a transverse field) added to it
	. We see evidence that this model is closely related to the 3D classical cl
	ock model through the standard quantum to classical mapping. For q>=5\, we 
	see a continuous phase transition and for q=5\,6 we show that\, at the phas
	e transition\, an emergent U(1) symmetry appears\, similar to the 3D classi
	cal clock models.\nWe address the connection that this emergent symmetry ha
	s to a second length scale within the scenario of dangerously irrelevant pe
	rturbations of the XY model. We also demonstrate the existence of a tricrit
	ical point in the case of q=4\, which can be tuned by changing the form of 
	the quantum fluctuation operator.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR