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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-714@lptms.universite-paris-saclay.fr
DTSTART:20200107T110000Z
DTEND:20200107T120000Z
DTSTAMP:20200105T162225Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-fernando-iemini-universidade-federal-fluminense/
SUMMARY:Séminaire du LPTMS: Fernando Iemini (Universidade Federal Fluminen
 se) - Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 
 - 7 Jan 20 11:00
DESCRIPTION:Boundary time crystals\nFernando Iemini (Universidade Federal F
 luminense)\n\nSpontaneous symmetry breaking is a cornerstone of physics an
 d occurs at all energy scales\, in cosmology and high-energy physics as we
 ll as in condensed matter. Breaking space translation symmetry for example
  gives rise to crystals\, while superfluids and ferromagnets are manifesta
 tions or the spontaneous breaking of gauge or rotational invariance\, resp
 ectively. Amongst all possible complex situations that were considered and
  experimentally verified so far breaking the time-translation symmetry\, g
 enerating a "time-crystal"\, had not received attention. The possible exis
 tence of time crystals\, first addressed by Wilczek in 2013\, prompted an 
 intense discussion.\n\nIn this seminar we will discuss about this new phas
 e of matter\, and present our recent results predicting a novel form of ti
 me-translation symmetry breaking: continuous Boundary Time Crystals (BTCs)
 . In the BTC phase\, symmetry breaking appears in a (macroscopic) fraction
  of the system. Moreover\, a BTC breaks the continuous time-translation sy
 mmetry\, i.e. the system self-organises in a time periodic pattern with a 
 period which only depends on its coupling constants.
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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