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DTSTART:20180325T030000
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DTSTART:20171029T020000
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DTSTAMP:20260424T143223Z
UID:593e7ce54d8bd592526442@ist.ac.at
DTSTART:20180306T110000
DTEND:20180306T123000
DESCRIPTION:Speaker: Francesco Peronaci\nhosted by Maksym Serbyn\nAbstract:
  Periodically driven (Floquet) quantum systems may host interesting phenom
 ena\, such as topological phases of ultra-cold atoms [1] and light-induced
 superconductivity [2]. These systems are a long-standing subject of theore
 ticalstudies\, which recently focused on isolated quantum many-body system
 s [3].In the seminar I will discuss recent results [4] on the periodically
  drivenFermi-Hubbard model  a prototype of strongly correlated electrons. 
 First\, Iwill show that for moderate interaction the system thermalizes\, 
 as expected forgeneric isolated many-body systems. Then\, I will describe 
 the emergence of aprethermal regime (Floquet prethermalization) as the int
 eraction is increased. This regime is a consequence of a well-known bottle
 neck mechanism\, that is the quasi-conservation of doublon excitations at 
 large interaction. Finally\, I will discuss the existence of a critical dr
 ive frequency at which the system thermalizes despite the large interactio
 n\, due to a resonant condition of the drive frequency with the doublon ex
 citation energy.References[1] G. Jotzu\, M. Messer\, R. Desbuquois\, M. Le
 brat\, T. Uehlinger\, D. Greif\, and T. Esslinger\, Experimental realisati
 on of the topological Haldane model\, Nature 515\, 237 (2014).[2] M. Mitra
 no\, A. Cantaluppi\, D. Nicoletti\, S. Kaiser\, A. Perucchi\, S. Lupi\, P.
  Di Pietro\, D. Pontiroli\, M. Ricc o\, S. R. Clark\, D. Jaksch\, and A. C
 avalleri\, Possible light-induced superconductivity in K3C60 at high tempe
 rature\, Nature 530\, 461 (2016).[3] R. Moessner and S. L. Sondhi\, Equili
 bration and Order in Quantum Floquet Matter\, NaturePhysics 13\, 424 (2017
 ).[4] F. Peronaci\, M. Schir o\, and O. Parcollet\, Resonant thermalizatio
 n of periodically drivenstrongly correlated electrons\, arXiv:1711.07889 (
 2017).
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:Francesco Peronaci: Dynamical regimes of strongly correlated electr
 ons under periodic driving
URL:https://talks-calendar.ista.ac.at/events/1068
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