Presentation of IPhT : The Institute of Theoretical Physics (IPhT) is an Institute of the Direction of Fundamental Research (DRF) of the Commissariat for Atomic Energy and Alternative Energies (CEA).

Giorgio Parisi Nobel Prize in Physics 2021

The Nobel Prize in Physics 2021 has been awarded to Giorgio Parisi for his work in statistical physics, with the other half going to two specialists in climate modeling. Giorgio Parisi, professor at the University of Rome "La Sapienza", has made numerous stays in the Paris region, where he has established many collaborations.

Giorgio Parisi has been distinguished for his work on disordered systems: The Sherrington-Kirkpatrick model in the first place (a mean-field spin glass model), for which he found the solution "with a very unconventional method" and revealed a surprisingly complex and totally new physics. The Edwards-Anderson model then (a spin glass model on a lattice), with both analytical and numerical methods. Finally, the one-step replica symmetry breaking models, which have a very different physics and which, beyond their interest in understanding the physics of structural glasses, have opened a whole field of studies mixing physics and theoretical computer science (optimization problems, artificial intelligence, neural networks, ...).

Besides statistical physics, Giorgio Parisi is known for works on surprisingly varied subjects, such as field theory applied to particle physics (Altarelli-Parisi equations), critical phenomena (with an original method of calculating exponents), numerical simulations of lattice QCD (quantum chromodynamics), and even the mechanisms at work in starling clouds. The methods used range from mathematical physics to numerical simulations, including the design of computers dedicated to lattice QCD simulations.

He is a physicist full of ideas and he had many collaborations with IPhT physicists. He has co-authored 36 papers with our institute, first on mathematical physics and field theory (with R. Balian, E. Brézin, J.-M. Drouffe, C. Itzykson, A. Voros, J. Zinn-Justin, J.-B. Zuber), then on lattice QCD (A. Billoire), and these last years on the physics of disordered systems (A. Billoire, P. Urbani).

G. Misguich, 2021-10-12 11:18:00

Problems in Quantum Field Theory : a book by François Gelis.

**Francois Gelis's book**, ** Problems in Quantum Field Theory**, largely inspired by his QFT lectures in the Master program

This new book is a follow-up on his earlier textbook, "Quantum Field Theory", published by CUP in 2019.

E. De-laborderie, 2021-10-11 16:12:00

Mathematical Harmony and the Quantum World

A conference honouring the 60 years anniversary of our former colleague Denis Bernard will take place at the ENS Paris :
45 rue d’Ulm, Salle Dussane - October 14-16, 2021.

45 rue d’Ulm, Salle Dussane

Participation and talks will be **in hybrid mode**.

For the safety of all participants, **all mandatory sanitary restrictions related to the ongoing Covid-19 epidemics will be implemented t**hroughout the duration of the conference. In particular, participants might be required to wear masks inside the conference venue.

More details can be found on the webpage of the conference

__Organisers:__ Jesper Jacobsen , Didina Serban, Fabian Essler, Giuseppe Mussardo, Antoine Tilloy, Tony Jin

E. De-laborderie, 2021-10-07 15:24:00

Avec une mémoire quantique, l’ordinateur quantique « maigrit » d’un facteur mille !

2021-09-29 17:16:00

The art of mathematical physics

2021-09-01 16:31:00

Correlation functions and wave functions in solvable models

2021-08-31 16:44:00

Black-hole microstructure conference (June 7th - 11th, 2021)

2021-06-03 16:55:00

2021-05-01 11:45:00

Multipole Ratios : A New Window into Black Holes

2020-11-27 15:16:00

Orazio Scarlatella lauréat du prix de thèse Physique des Ondes et de la Matière (PhOM) 2020

2020-11-26 11:07:00

Modeling the city: an equation ends centuries-old controversies

2020-11-19 11:10:00

Quantum entanglement: A single photon takes two optical paths by "entangling" them!

2020-10-15 15:06:00

An strongly secured encryption

2020-09-17 17:01:00

David Kosower lauréat de l'ERC Advanced Grant "Ampl2Einstein"

2020-04-03 15:57:00

Un nouvel ouvrage co-écrit par Pierfrancesco Urbani, physicien à l’IPhT

2020-01-31 14:15:00

Un nouvel ouvrage co-écrit par Henri Orland, physicien à l'IPhT

2020-01-28 16:16:00

2019-11-18 09:39:00

Philippe Brax (IPhT), representing UP Saclay in EuCAPT

2019-11-04 14:18:00

Quantum Field Theory : A book by François Gélis.

2019-07-25 00:00:00

Fri, Oct. 29th, 10:00-12:30

Cours de physique théorique de Saclay - Andrea Puhm

Fri, Nov. 05th, 10:00-12:30

Cours de physique théorique de Saclay - Blagoje Oblak