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SUMMARY:Vestiges of quantum oscillations in the open evolution of semiclas
 sical states
DTSTART:20170407T150000
DTEND:20170407T160000
DTSTAMP:20260427T210659Z
UID:1f8f7aa5dfca22dd8bd0f566baba2a6dfbde7dc4d1a0ac09bd66de2b
CATEGORIES:Conferences - Seminars
DESCRIPTION:Professor Alfredo Miguel Ozorio De Almeida\, Centro Brasileiro
  de Pesquisas Fisicas (CBPF)\nA single wave component of a quantum particl
 e can in principle be detected by the way that it interferes with itself\,
  that is\, through the local wave function correlation. The interpretation
  as the expectation of a local translation operator allows this measure of
  quantum wavyness to be followed through the process of decoherence in ope
 n quantum systems. This is here assumed to be Markovian\, determined by L
 indblad operators that are linear in position and momentum. \n \nThe lim
 itation of small averaging windows and even smaller correlation lengths si
 mplifies the semiclassical theory for the evolving local correlation. Its 
 spectrum has a peak for each classical momentum\, subjected to Gaussian br
 oadening with decoherence. These spectral lines can be clearly resolved ev
 en after the Wigner function has become positive: The correlations located
  far from caustics seem to be the last vestige of quantum oscilations.\n 
 \n \n 
LOCATION:BCH 3118 https://plan.epfl.ch/?room==BCH%203118
STATUS:CONFIRMED
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