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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-744@lptms.universite-paris-saclay.fr
DTSTART:20201020T140000Z
DTEND:20201020T170000Z
DTSTAMP:20201019T082433Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/soutenance-de-th
 ese-nina-javerzat/
SUMMARY:Soutenance de thèse: Nina Javerzat - Grand amphi\, bâtiment Pasca
 l n° 530 - 20 Oct 20 14:00
DESCRIPTION:New conformal bootstrap solutions and percolation models on the
  torus\npar\n\nNina Javerzat\nJury:\n\nBertrand Duplantier\, IPhT\, examin
 ateur\n\nMalte Henkel\, LPCT\, Université de Lorraine\, rapporteur\n\nEve
 liina Peltola\, University of Bonn\, examinatrice\n\nMarco Picco\, LPTHE\,
  examinateur\n\nSilvain Ribaud\, IPhT\, examinateur\n\nRaoul Santachiara\,
  LPTMS\, Université Paris Saclay\, directeur de thèse\n\nErik Tonni\, SI
 SSA\, rapporteur\n\nJacopo Viti\, Istituto Nazionale di Fisica Nucleare\, 
 examinateur\n\n&nbsp\;\n\nRésumé:\n\nThe geometric properties of critica
 l phenomena have generated an increasing interest in theoretical physics a
 nd mathematics over the last thirty years. Percolation-type systems are a 
 paradigm of such geometric phenomena\, their phase transition being charac
 terised by the behaviour of non-local degrees of freedom: the percolation 
 clusters. At criticality\, these clusters are examples of random objects w
 ith a conformally invariant measure. Even in the simplest model\, uncorrel
 ated percolation\, important universal properties remain out of reach\, i
 n particular the connectivity properties −the probabilities that points 
 are connected by clusters.\n\n\nIn two dimensions\, the presence of confor
 mal symmetry has especially important implications\, which can be exploite
 d to obtain a complete determination of the universality classes. We will 
 present results on the universal properties of two families of long-range 
 correlated percolation models\, obtained using a conformal bootstrap appro
 ach and the study of the clusters connectivities on a torus topology.\n\n\
 nThe first family is the random cluster Q− state Potts model\, whose con
 formal field theory is not yet −albeit almost\, fully solved today. We t
 est conjectures on this conformal field theory by computing the finite siz
 e effects induced on the connectivities by the torus topology\, and compar
 ing with numerical measurements.\n\n\nThe second family is obtained from t
 he excursion sets of fractional Gaussian surfaces. We use conformal field 
 theory predictions on the torus cluster connectivities\, together with num
 erical simulations\, to establish the conformal invariance of these system
 s\, and obtain the first features of this new conformal field theory.\n\nZ
 oom meeting\n\nID de réunion : 968 8791 8326\nCode secret : 666675
CATEGORIES:seminars
LOCATION:Grand 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=Grand amphi\, bâtiment Pasca
 l n° 530:geo:0,0
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