Théorie

Neutrinos : from non standard frameworks to the discovery of the diffuse supernova neutrino background

The observation that neutrinos change flavor during propagation – termed neutrino oscillations - has shown that neutrinos are massive elementary particles with mixings which points to physics beyond the Standard Model and impacts astrophysics and cosmology. While the discovery dates 1998, key questions remain open concerning neutrino properties, how neutrinos change flavor in dense environments and their impact on future observations.
 

Extreme phases of matter

RESEARCH THEME: Using the AdS/CFT correspondence to study phases of gauge theories, at strong coupling at finite temperature and density. A related problem is to understand the physics of cold nuclear matter at the center of neutron stars..

Strong coupling physics, holography and cosmology

RESEARCH THEME: Using the AdS/CFT correspondence to study de Sitter space and Inflation driven at strong coupling.
 
SUBJECT AND NATURE OF PROPOSED WORK: The AdS/CFT correspondence give a new perspective both at strong coupling physics of quantum field theory and the nature of the gravitational interaction. This thesis will deal with  understanding the physics of de Sitter space and its famous problems, namely its realization, the divergences of correlation functions and the backreaction of quantum field theories.

Strong coupling physics, holography  and cosmology

Strong coupling physics, holography  and cosmology

 

RESEARCH THEME: Using the AdS/CFT correspondence to study de Sitter space and Inflation driven at strong coupling.

 

RESEARCH GROUP in the Laboratory : APC, Theory

 

Holography and Extreme phases of matter

RESEARCH THEME: Using the AdS/CFT correspondence to study phases of gauge theories at strong coupling, at finite temperature and density. A related problem is to understand the physics of cold nuclear matter in neutron stars

Modèles de gravité modifiée et futures observations en astrophysique et cosmologie

La relativité générale est une théorie plus que centenairequi a survécu, jusqu’à présent, à toutes les mises à l’épreuve observationnelles. Avec les détections des ondes gravitationnelles émises par des coalescences de trous noirs ou d’étoiles à neutrons s’amorce une nouvelle étape dans l’histoire de la relativité générale:  l’ère de l’astronomie gravitationnelle.

Astronomy at the highest energy frontier

Astronomical sources are observed nowadays across different domains of electromagnetic spectrum (from radio to gamma-rays) and different astronomical "messengers" (photons, neutrinos, gravitational waves). Combining different types of observational data we have learned that some types of sources operate huge high-energy particle accelerators / colliders boosting particle energies to ten million times higher energies than reached at the Large Hadron Collider at CERN. 

Théorie