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).

Next Carlo Heissenberg's arrival at IPhT!

Carlo Heissenberg graduated with flying colors in 2019 from the Scuola Normale Superiore di Pisa, the Italian twin sister of the Ecole Normale de Paris. His initial research focused on the infrared properties of gravitational theories and higher spin theories from the perspective of asymptotic symmetries, a topic that later found phenomenological applications in the context of gravitational wave studies.

It was during his first postdoctoral period at Nordita-Uppsala (2019-2023) that Carlo started working on gravitational wave physics using ideas borrowed from particle physics, such as scattering amplitudes and eikonal exponentiation in particular. He quickly became a leader in the field, publishing several important papers with world-famous physicists such as Gabriele Veneziano. Carlo's group achieved, for instance, the first complete calculation of the gravitational deflection angle to the third post-Minkowskian order in the Newton coupling constant expansion, while simultaneously resolving the high-energy limit problem that was puzzling the community.

In the meantime, Carlo was granted a Marie-Curie fellowship and moved to his second postdoc at Queen Mary, while continuing to work on gravitational wave physics, focusing on new observables (waveforms, angular momentum loss, effect of spins…) that could be calculated efficiently using scattering amplitudes techniques.

**Carlo accepted an offer from the IPhT and will join the lab as a permanent member in Fall 2024.**

E. De-laborderie, 2024-07-18 10:17:00

Teaching ideal quantum measurements

Former director of the Service de Physique Théorique de Saclay (1979-1987) [1], our friend and colleague Roger Balian has just published with his collaborators Armen Allahverdyan, Yerevan Physics Institute, and Theo M. Nieuwenhuizen, Institute for Theoretical Physics Amsterdam, on the journal *Comptes Rendus. Physique* de l'Académie des Sciences [2].

In this publication, the authors present a graduate course on ideal measurements, which are dynamic processes coupling the quantum system under test and a measuring device, analyzed within the framework of quantum statistical mechanics.

[1] Short biography in « Roger Balian is 80! »

[2] *Comptes Rendus. Physique* 2024, Vol. 25, p. 251-287. https://doi.org/10.5802/crphys.180

R. Guida, 2024-07-12 20:18:00

Next arrival of Olivier Gingras at IPhT!

Olivier Gingras will join the IPhT in early 2025 on a permanent joint position at the IPhT and the QCC, Flatiron, New York. Part of the challenge of this position will be to facilitate interactions and collaborations between the two institutes on the theme of the quantum N-body problem.

Olivier did his PhD in Sherbrooke and Montreal, Canada, on the N-body quantum problem, and acquired expertise in DFT (Density Functional Theory), DMFT (Dynamical Mean Field Theory) and the physics of superconducting gap symmetry in Strontium Ruthenate compounds. Since 2022, he has been a post-doc at CCQ, during which he has been able to broaden his numerical expertise without forgetting interactions with experimentalists.

With his openness to a wide range of numerical expertise and his sensitivity to the importance of experimental studies in quantum materials research, Olivier will be a tremendous asset to numerical and phenomenological physics on the Saclay plateau, and will be essential in federating and maintaining collaboration between DRF and CCQ. Welcome to the IPhT Olivier, for a brilliant career ahead!

E. De-laborderie, 2024-07-05 14:19:00

Supersymmetry Meets Random Matrices

2024-07-04 15:21:00

Magnetic quivers and Higgs mechanism

2024-06-28 19:15:00

Speakable and Unspeakable in Quantum Gravity

2024-06-28 18:56:00

Dilepton polarization as a signature of plasma anisotropy

2024-06-05 18:52:00

"Les Houches" International School of Physics (July 29- August 23)

2024-05-02 11:21:00

2024-05-02 10:36:00

The Institut de Physique Théorique celebrates Philippe Di Francesco's 60th birthday

2024-04-30 15:31:00

Measuring the speed of sound at 2.5 trillion degrees

2024-03-05 16:17:00

Two IPhT researchers feature in the latest issue of "Sciences et Avenir- La recherche".

2024-02-29 19:06:00

LISA mission gets the go-ahead from ESA

2024-01-26 16:35:00

2024-01-17 15:58:00

A Marc Barthélémy and Vincent Verbavatz's new book: Statistics of Urban populations.

2024-01-11 16:21:00

One IPhT scientist involved in the top 10 breakthroughs of 2023!

2024-01-10 10:55:00

Welcome to Anne Capdepon, Deputy Head of Research Support at the IPhT.

2023-12-14 09:54:00

The first images taken by Euclid revealed

2023-11-17 16:21:00

Celebration of IPHT's 60 years birthday

2023-11-17 15:42:00

A Starting ERC Grant for Ben Wieder

2023-09-06 15:32:00

Death of Michel Gaudin (02/12/1931 -- 04/08/2023)

2023-08-24 09:49:00

Efficient algorithms for scattering amplitudes

2023-07-12 15:18:00

Matt Von Hippel is to join IPhT on September 1.

2023-05-30 09:40:00

Monica Guica receives the CNRS bronze medal for the year 2023!

2023-04-03 15:21:00

27th Itzykson Conference : Fluctuations far from Equilibrium

2023-03-21 15:39:00

2023 Galileo Galilei Medal for David Kosower (IPhT), Zvi Bern(California U) and Lance Dixon (SLAC)

2023-02-17 09:04:00

Quantum networks : Entangled ions across the university campus Innsbruck

2023-02-10 15:11:00

Hamiltonian paths, a challenge for KPZ.

2023-02-03 15:19:00

Kibble-Zurek phenomenon: from the early Universe to a spin chain

2023-02-03 14:15:00

Kirone Mallick winner of the 2022 Physics French Society (SFP) Paul Langevin Prize

2023-02-01 15:18:00

EPS PhD prize awarded to IPhT student

2022-11-04 10:33:00

Exact Macroscopic Fluctuations Far from Equilibrium

2022-08-25 15:09:00

Retreat of the IPhT in Autrans : aftermath

2022-06-22 09:05:00

Arrival of Ben Wieder on next september

2022-06-17 15:12:00

Arrival of Dalimil Mazáč at IPhT

2022-06-07 10:14:00

Maps day at IPhT on 24 June 2022

2022-06-03 10:33:00

Quantum bounds and fluctuation-dissipation relations

2022-05-12 11:47:00

26ème conférence Itzykson : "Black-Hole Microstructure IV"

2022-05-12 10:32:00

Colloquium Rencontres de l'IPhT in Autrans (Vercors) from 23 to 25 May.

2022-05-12 10:02:00

An extension of Tutte's formula 60 years later

2022-04-20 11:13:00

2022-04-05 11:28:00

Public talk of Stephane Lavignac on Tuesday March 15th

2022-03-11 09:17:00

A new book written by Marc Barthélémy about spatial networks

2022-02-22 11:05:00

Cédric Villani at IPhT on March 1st

2022-02-22 10:26:00

Summer School in Cargèse around exotic superconductivity

2022-02-07 15:39:00

Langevin Prize of the French Society of Physics for Mariana Graña

2022-02-04 10:46:00

2022-02-01 09:21:00

Maxime Leroy joins the IPHT support team

2022-01-27 15:24:00

Un lien entre la masse du boson de Higgs et la constante cosmologique

2021-11-25 14:11:00

Conférence exceptionnelle de Cédric Villani le lundi 22 novembre à 19h30 (Institut Pascal)

2021-11-18 14:33:00

Mathematical Harmony and the Quantum World

2021-10-07 15:24:00

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

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

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