Condensed Matter

Coordinator : Silke Biermann 

• Permanent staff 

Olesia Dmytruk
Michel Ferrero 
Antoine Georges
Karyn Le Hur
Leonid Poyurovskiy
Marc-Olivier Renou
Laurent Sanchez-Palencia
Evgeny Stepanov
Alaska Subedi
Filippo Vicentini

• PhD students

Sariah Al Saati
Frederick del Pozo
Félix Fossati
Adrien Kahn
Anustup Mukherjee
Liam Rampon
Ahmedeo Shokry
Jie Xiong
Shengjie Yu

• Post-docs

Maria Chatzieleftheriou
Victor Fernandez
​Dario Fiore Mosca
Viktor Harkov
Dean Johnstone
Rajah Nutakki
Olivier Simard
Isadora Veeren

Research activities

The research activities of the condensed matter group are devoted to the theory of correlated quantum systems, covering the whole spectrum from crystalline materials, mesoscopic or nanoscopic systems to ultracold atom gases and systems coupling matter and radiation. We aim at

1. Identifying and describing emergent collective behaviour arising from the interactions in fermionic or bosonic systems;

2. Characterizing novel quantum phases of matter (including their topological properties) and the associated quantum phase transitions;

3. Understanding structural, spectral, magnetic and transport properties of correlated systems.​ ​

An important aspect of our work is the development of theoretical approaches to tackle such systems. We make use of a wide panel of techniques, including analytical approaches (e.g. mean field theory, Bethe ansatz, Yang-Yang theory, bosonization, renormalization group analysis, slave-rotor techniques...) and large-scale numerical simulations for many-body systems (e.g. dynamical mean field theory (DMFT), exact diagonalization, quantum Monte Carlo, density matrix renormalization group (DMRG) and matrix-product states,...) and within an ab initio framework (density functional theory (DFT) and density functional perturbation theory, ab initio many-body perturbation theory (“GW approximation”), constrained random phase approximation techniques...).

Job offers:

A postdoctoral position is available in the field of light-control of materials using first principles calculations.  Please contact Alaska Subedi (alaska.subedi@polytechnique.edu) along with a CV and a list of publications.