BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261017T042645Z
LAST-MODIFIED:20191031T132511Z
DTSTART:20191106T203000Z
DTEND:20191106T220000Z
UID:event2229@bu.edu
URL:http://physics.bu.edu/internal/events/show/2229
SUMMARY:Anomalous transport in integrable spin chains
DESCRIPTION:Featuring Sarang Gopalakrishnan \, The City University of New Y
	ork\nHosted by: Anushya Chandran\n\nPart of the Condensed Matter Theory Sem
	inar Series.\n\nThe XXZ spin chain is a canonical model of one-dimensional 
	quantum magnetism. We consider spin transport at nonzero temperature in thi
	s model. Spin transport is ballistic in the easy-plane regime\, diffusive i
	n the easy-axis regime\, and superdiffusive at the isotropic Heisenberg poi
	nt. Energy transport\, by contrast\, is ballistic in all cases. The framewo
	rk of generalized hydrodynamics offers an elementary explanation of these p
	henomena [1] in terms of the quasiparticle content of the XXZ model. It als
	o predicts new transport anomalies\, e.g.\, in local relaxation in the easy
	-axis regime in the presence of a magnetic field [2]\, and in the a.c. cond
	uctivity in the easy-plane regime [3]. These anomalies come from the asympt
	otic behavior of large bound states of many quasiparticles\, as we will dis
	cuss. \n\n[1] SG\, R. Vasseur\, PRL 122\, 127202 (2019)\n[2] SG\, R. Vasseu
	r\, B. Ware\, PNAS 116\, 16250 (2019)\n[3] U. Agrawal\, SG\, R. Vasseur\, a
	nd B. Ware\, arXiv:1909.05263
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR