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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-604@lptms.universite-paris-saclay.fr
DTSTART:20180419T110000Z
DTEND:20180419T120000Z
DTSTAMP:20180406T065933Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-alfredo-ozorio-de-almeida-jour-inhabituel/
SUMMARY:Séminaire du LPTMS: Alfredo Ozorio de Almeida - LPTMS\, salle 201\
 , 2ème étage\, Bât 100\, Campus d'Orsay - 19 Avr 18 11:00
DESCRIPTION:!!! Attention : jour inhabituel !!!\nTranslations and reflectio
 ns on the torus: Identities for discrete Wigner functions and transforms\n
 Alfredo Miguel Ozorio de Almeida (Centro Brasileiro de Pesquisas Fisicas\,
  Rio de Janeiro\, Brazil)\n\nA finite Hilbert space can be associated to a
  periodic phase space\, that is\, a torus. A finite subgroup of operators 
 corresponding to reflections and translations on the torus form respective
 ly the basis for the discrete Weyl representation\, including the Wigner f
 unction\, and for its Fourier conjugate\, the chord representation. They a
 re invariant  under Clifford transformations and obey analogous product r
 ules to the continuous representations\, so allowing for the calculation o
 f expectations and correlations for observables. We here import new identi
 ties from the continuum for products of pure state Wigner functions and ch
 ord functions\, involving\, for instance the inverse phase space participa
 tion ratio and correlations of a state with its translation. Connections b
 etween products of Wigner functions and mixed (transition) Wigner function
 s also arise. Finally\, generalizations of translations and reflections to
  a doubled phase space connect the Weyl representation of the evolution op
 erator to the propagator of Wigner functions.
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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