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VERSION:2.0
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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261017T111028Z
LAST-MODIFIED:20180912T153133Z
DTSTART:20180914T160000Z
DTEND:20180914T170000Z
UID:event2016@bu.edu
URL:http://physics.bu.edu/internal/events/show/2016
SUMMARY:Activating many-body localization in solids by driving with light
DESCRIPTION:Featuring Zala Lenarčič\, University of Cologne\, Institute f
	or Theoretical Physics\n\nPart of the Condensed Matter Theory Seminar Serie
	s.\n\nCoupling to phonons prevents many body localization (MBL) from occurr
	ing in disordered solids even when the disorder is strong. This is because 
	phonons mediate non-local interaction which weakly breaks local conservatio
	n laws characteristic for the MBL phase. Nevertheless\, I will show that de
	cay of local conservation laws can be compensated when the system is driven
	 out of equilibrium. We propose to detect the fingerprints of an underlying
	 MBL phase by measuring the variation of local temperatures in the resultin
	g steady state.\n \nThe concrete example I will consider is a one-dimension
	al disordered spin-chain which is weakly coupled to a phonon bath and weakl
	y irradiated by white light. The irradiation has weak effects in the ergodi
	c phase. However\, if the system is in the MBL phase irradiation induces st
	rong temperature variations of order 1. Temperature variations can be used 
	similar to an order parameter to detect MBL phases\, the phase transition\,
	 an MBL correlation length and even the critical exponents.\n \nZ. Lenarcic
	\, E. Altman\, and A. Rosch\, arXiv:1806.04772 (2018)
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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