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SUMMARY:Order parameter recovery dynamics in pump and probe experiments
DTSTART;VALUE=DATE-TIME:20190731T072000Z
DTEND;VALUE=DATE-TIME:20190731T080000Z
DTSTAMP;VALUE=DATE-TIME:20240229T214600Z
UID:indico-contribution-50@ictp.it
DESCRIPTION:Speakers: EUGENE DEMLER (University of Harvard)\nOne of the ce
 ntral challenges of ultrafast experiments is understanding order parameter
  recovery dynamics following a quench induced by the pump pulse. I will pr
 esent theoretical analysis of this problem using large-N effective model o
 f overdamped dynamics. Interesting features of this model include strong d
 ependence of the recovery time on the strength of the pump pulse and diffe
 rent relaxation timescales for excitations at different lengthscales. Simi
 lar features have been observed in systems with different types of order\,
  including CDW order in LaTe3 and AF order in Sr2Ir2O4. I discuss other pr
 edictions of the model that can be tested experimentally\, including over-
 population of low momentum modes and emergent universal scaling form of tr
 ansient correlation functions.\n\n//indico.ictp.it/event/8705/session/6/co
 ntribution/50
LOCATION:ICTP Leonardo Building - Budinich Lecture Hall
URL://indico.ictp.it/event/8705/session/6/contribution/50
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