Institut de Physique Théorique
Direction des Sciences de la Matière  - CEA-Saclay
Unité de Recherche Associée au CNRS
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Thursday, June 20, 2013

Welcome to IPhT

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Agenda

Today

10h00 Conférence IPhT

Conférence IPhT

Amphi Claude Bloch, Bât. 774 Orme des Merisiers

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Friday, Jun 21, 2013

10h00 Conférence IPhT

Conférence IPhT

Amphi Claude Bloch, Bât. 774 Orme des Merisiers

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10h00 Cours de physique théorique

Cours de physique théorique

Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Claude Godrèche

14h15 Séminaire de matrices, cordes et géométries aléatoires

Séminaire de matrices, cordes et géométries aléatoires

Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Michal Heller

Thursday, Jun 27, 2013

11h00 Groupe de travail

Groupe de travail

Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Friday, Jun 28, 2013

10h00 Cours de physique théorique

Cours de physique théorique

Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Claude Godrèche

14h15 Séminaire de matrices, cordes et géométries aléatoires

Séminaire de matrices, cordes et géométries aléatoires

Salle Claude Itzykson, Bât. 774 Orme des Merisiers

David Turton


more...
The Institut de Physique Théorique (IPhT) is a laboratory of fundamental research, located in Saclay, about 20 km south-west of Paris.

The research performed at the IPhT aims at better understanding the laws which govern our universe and its organisation. It encompasses most of the great subjects of modern theoretical physics:

The IPhT comprises about fifty permanent physicists (2/3 CEA, 1/3 CNRS), about thirty PhD students and postdocs, assisted by a support staff of about ten people. The IPhT also hosts permanently many short term visitors.

News

Journées Cartes at IPhT, June 20-21, 2013 

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The ``Journées Cartes'' are regular meetings between researchers from different fields (mathematics, computer science and theoretical physics) working on a same subject : combinatorial maps, models of discrete random surfaces appearing notably in the context of two-dimensional quantum gravity. The next meeting will be held at IPhT on June 20 and 21, 2013. Please feel welcome to listen to our nine young speakers !

J. Bouttier, 2013-06-14

 

18th Itzykson meeting 

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The 18th Itzykson meeting: "Frontiers of String Theory" will be held in the amphitheater Bloch on July 1-3.

You are all invited to participate. Please register at http://ipht.cea.fr/Meetings/Itzykson2013/register.php

We hope to see you there,

Iosif, Mariana, Ruben and Pierre

A. Capdepon, 2013-05-23

 

A new algorithm for discrete tomography 

X-ray tomography is a widely used imaging technique that allows one to produce internal images in materials science or medical applications. An X-ray beam is transmitted through the sample and the projection is recorded on a detector at different angles. The most widely used reconstruction algorithm of the original image from these measurements provides satisfying results only for a large number of such projections. In order to reduce the acquisition time or the total dose absorbed by the patient, tomography users need other reconstruction algorithms that incorporate known properties of the original image. In particular, images with a discrete set of absorption values and few interfaces are frequently encountered in materials science.

Inspired by results from statistical physics of the Ising model, Lenka Zdeborova and her colleagues [1] have proposed a novel message-passing algorithm for discrete tomography. The algorithm works on two levels: it is iteratively sending probabilistic messages between the different light rays and different set of messages within each light ray in order to satisfy the observed values of measurements. The resulting algorithm is fast, and entirely distributed. The authors showed that for binary ...

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M. Barthelemy, 2013-05-02

 

Congrès Général de la Société Française de Physique

Scaling laws for products of random matrices

Spin Imbalance and Spin-Charge Separation in a Mesoscopic Superconductor

Cookbook for Dark Matter Indirect Detection

Roger Balian is 80!

Seminar by Gerard 't Hooft

Colloque de l'IPhT 2012, c'est fini, mais les transparents et les photos sont en ligne !

Apprivoiser les statistiques hors d'équilibre

"Journal of Physics A" : Best Paper Prize 2012

Great success for the 17th annual meeting Itzykson!

Permanent Position in Theoretical Physics

17th Itzykson meeting

"Nuclear Physics B" award

Attribution d’une chaire Blaise Pascal à Constantin Efetov sur l'IPhT

"Gay Lussac/Humboldt" 2010 prize to Volker Schomerus