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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-853@lptms.universite-paris-saclay.fr
DTSTART:20221108T141500Z
DTEND:20221108T141500Z
DTSTAMP:20221101T085026Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/mini-workshop/
SUMMARY:Mini-workshop on modern trends in condensed-matter physics - Petit 
 amphi\, bâtiment Pascal n° 530 - 8 Nov 22 14:15
DESCRIPTION:14h15 Oded Zilberberg (Uni Konstanz) : The impact of open syste
 m fluctuations on critical quantum impurity physics.\n14h50 Guido Pupillo 
 (Uni Strasbourg) : Semilocalization in long-range random spin models\n15h2
 5 Jonathan Ruhman (Uni Bar-Ilan) : The Measurement phase transition\nAbstr
 act:\nAs time goes by\, the degrees of freedom in a closed quantum system 
 tend to get more entangled with each other due to their interactions. On t
 he other hand\, an observer from outside can reduce this internal entangle
 ment by performing a measurement. This raises the question: Which of these
  two processes is more dominant in a system that is simultaneously evolvin
 g in time and undergoing measurement? In this talk I will show evidence th
 at both processes can be dominant\, and there is a dynamical phase transit
 ion tuned by their relative strength. The transition is between an "entang
 led" phase\, where the internal scrambling of quantum information prevails
  and a second "disentangled" phase where the observer drains in the intern
 al information and renders all quantum correlations to be of the "few-body
 " type. In 1D systems we have evidence of this transition for fine tuned m
 odels\, mapping to classical percolation and from numerics on small system
 s. However\, for 0D systems\, where all degrees of freedom interact equall
 y we can make the argument more concrete in the generic case\, by taking a
 dvantage of local tree-like structures in the circuit representation of th
 e non-unitary time evolution operator.\n16h00 Karyn Le Hur (Ecole Polytech
 nique) : Engineering a p+ip Superconductor and Majorana Fermions in Quant
 um Wires\nReference: F. Yang\, V. Perrin\, A. Petrescu\, I. Garate and K. 
 Le Hur\, Phys. Rev. B. 101\, 085116 (2020)
CATEGORIES:seminars
LOCATION:Petit amphi\, bâtiment Pascal n° 530\, rue André Rivière\, Ors
 ay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Rivière\, Orsay
 \, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Petit amphi\, bâtiment Pasca
 l n° 530:geo:0,0
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