Centre de Physique Théorique

The center for Theoretical Physics (CPHT) at Ecole Polytechnique gathers research scientists working in diverse domains of fundamental and applied Physics. The overall coherence is assured by the corpus of common, transposable, mathematical and numerical methods.
CPHT is a joint research unit of CNRS and Ecole Polytechnique, and has a partnership with the Collège de France. His director is Jean-René Chazottes, Senior Researcher at CNRS.
CPHT is on the campus of Ecole Polytechnique, buildings 5 and 6. The reception offices are located in building 6 , offices 06.1046 and 06.1045.

Postal Address :
CPHT
Ecole Polytechnique
91128 Palaiseau cedex
France

Secretary phone number : 01 69 33 42 01 (from abroad: +33 169 334 201)

Write an email to someone at CPHT : : firstname.lastname@polytechnique.edu

Colloquium du CPHT

Le premier colloquium du CPHT de cette nouvelle série aura lieu mardi 19 novembre à 11h en salle des conférences Louis Michel

Mette Gaarde, Professeure à l'Université d'État de la Louisiane

"Making movies of ultrafast dynamics: tracking and controlling femtosecond absorption and emission processes"

Immense progress in the development of femtosecond and attosecond light sources means that scientists are now routinely directing movies of ultrafast electron and molecular dynamics as it is unfolding on its natural time scale. For example, intense femtosecond X-ray pulses from free-electron lasers can directly take pictures of molecular structural changes, and attosecond extreme ultraviolet (XUV) pulses have been used to time the photoelectric effect. I will start this talk with a brief overview of different types of dynamics that are of interest to the ultrafast community and how to probe them. Then I will discuss an example of opto-optical modulation: how to manipulate the femtosecond time-dependence of absorption and emission processes in gases, with an optical laser pulse, in order to control the temporal and spatial properties of an XUV pulse.

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Journée des Thèses du CPHT 22 novembre 2019

La Journée des Thèses a eu lieu au CPHT le vendredi 22 novembre 2019 dans la salle de conférence Louis Michel.

Format : 10 minutes/exposé + 5 minutes pour les questions

10h00 - 11h15

• [10h00 - 10h15] Nicolas DELPORTE Quantum field theory on random geometries

• [10h15 - 10h30] Jordan MOLES Concentration inequalities

• [10h30 - 10h45] James BOUST Rare-Earth-based hard magnetic materials

• [10h45 - 11h00] Thibaut COUDARCHET Vacuum stability in string theory

• [11h00 - 11h15] Alice MOUTENET Developing diagrammatic algorithms to tackle the quantum many-body problem in and out of equilibrium

11h15 - 11h30 : pause café

11h30 - 12h45

• [11h30 - 11h45] Julian LEGENDRE Topology in magnetically ordered Kagome systems

• [11h45 - 12h00] Jan SCHNEIDER Correlation spreading in long-range systems

• [12h00 - 12h15] David RIVERA Topological regularization of gravity

• [12h15 - 12h30] Nahuel BARRIOS Perturbative study of long-distance non-abelian gauge theories

• [12h30 - 12h45] Hepeng YAO One-dimesional ultracold bosons in quasiperiodic potential: localization and fractality

12h45 - 14h00 : pause déjeûner

14h00 -15h00

• [14h00 - 14h15] Sabine HARRIBEY Renormalization in tensor field theory and the melonic fixed point

• [14h15 - 14h30] Benjamin BACQ-LABREUIL Study of an unconventional phase in Na-doped Ca2CuO2Cl using Dynamical Mean Field Theory

• [14h30 - 14h45] Louis VILLA Correlation spreading and excitation spectra of quantum systems out-of-equilibrium

• [14h45 - 15h00] Grégoire VARILLON Non-modal hydrodynamic stability analysis of ablation flows relative to inertial confinement fusion

15h00 - 15h15 : pause café

15h15 - 15h30

• Aurélien Canou : Soutien au calcul numérique au CPHT

15h30 - 16h30

• [15h30 - 15h45] Mufei LUO The role of laser bandwidth and random phase effects on the coupling in stimulated scattering instabilities in inhomogeneous plasma

• [15h45 - 16h00] William FOCILLON Structure du spin du proton et théorie de jauge

• [16h00 - 16h15] Balthazar DE VAULCHIER Induced gravity through compactification

• [16h15 - 16h30] Dung LE Light-cone wave function of onium in onium-nucleus scattering in different frames

16h30 : goûter et présentation des nouveaux membres du CPHT

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New series of IQUPS courses

IQUPS organises a new series of courses: on November 26 and December 10, 12 and 17 (2019), two courses will take place in the same mornings from 9:15 to 12:30:

Quantum fluids of light by Jacqueline Bloch (C2N, Palaiseau) and Quentin Glorieux (LKB, Paris)
Open Quantum Systems: Foundations and Applications by Laurent Sanchez-Palencia (Centre de Physique Théorique, Institut Polytechnique de Paris, Palaiseau)

The courses, in English, will take place at the grand amphi in C2N (new site near IOGS and Polytechnique).

For PhD students: the courses are labelled "complément de formation initiale" by the doctoral schools EDPIF et EDOM.

To attend the courses, please register on-line or send a mail to iqups@universite-paris-saclay.fr.

See more : here

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Antoine Georges et Gabriel Kotliar lauréats du prix Aneesur Rahman de physique numérique 2020

Professeur au Collège de France, directeur du Centre de physique quantique numérique du Flatiron Institute, Antoine Georges (X1980) est également professeur à l’École polytechnique et chercheur au Centre de Physique Théorique.

Gabriel Kotliar est Professeur à l'Université de Rutgers (New Jersey).

Le prix Aneesur Rahman est décerné depuis 1993 par la Société américaine de physique en reconnaissance de réalisations exceptionnelles dans le domaine de la physique numérique.

Ce prix récompense le travail d'Antoine Georges et de Gabriel Kotliar dans le développement de l’approche théorique du champ moyen dynamique, laquelle a permis des avancées décisives dans la compréhension des matériaux à forte corrélation quantique, typiquement les oxydes de cuivre supraconducteurs et les matériaux nano-structurés.

Plus d'informations : Actualité de l'Ecole polytechnique

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The Edward Teller Award 2019 presented to Patrick Mora

One of the two Edward Teller Awards 2019 has been presented to Patrick Mora, "for his scientific contributions to laser-plasma physics, from laser from laser light absorption to non-local electron heat transport and plasma expansion dynamics, and for his inspiring spirit of community service". The Teller Awards are awarded every other year by the Fusion Energy Division of the American Nuclear Society. It was presented to the winners during the 11th International Conference on Inertial Fusion Sciences and Applications which took place at Osaka (Japan) in september 2019.