Nuclear physics


The activity of the “Theory and Phenomenology” team is divided into three main themes, namely the microscopic modeling of compact stars, the physics of ultra-cold atoms, and numerical simulations

Estimation bayesienne du moment d’inertie (en ordonnées) et de l’épaisseur (en abscisses) d’une étoile à neutron de masse M=1.4Mo, avec prise en compte des contraintes provenant des données expérimentales en physique nucléaire, des calculs ab-initio, et des contraintes observationnelles. Les symboles donnent les prédictions de quelques modèles populaires d’équation d’état.

Microscopic modeling of compact stars

Since the recent (2017) detection of gravitational waves (GW) during the coalescence of two neutron stars (NS) leading to the emergence of multi-messenger astronomy, it is clear that nuclear physics has a key role to play in the understanding of these spectacular astrophysical phenomena, by providing microscopic theoretical and experimental data that can be directly connected with the observations. 

Physics of ultra-cold atoms

Atomic gases trapped in optical networks allow an almost perfect realization of the Hamiltonians used in condensed matter physics. In this context, a major challenge lies in the apprehension of the low energy properties of Hubbard’s model in two dimensions because of its possible connections with the high critical temperature of superconductivity in cuprates. The work carried out at the LPC has pursued the objective of determining the fundamental state of this model as a function of site interaction and density.

Diagramme de phase résultant de l'approche HF/BdG à symétrie projetée pour les fermions froids à interaction répulsive dans des tubes optiques. Les couleurs font référence aux différents ordres magnétiques (de charge), révélés par un pic dans la transformée de Fourier de la fonction d'autocorrélation du spin (densité).
RFQ-COOLER_Lighting element

Numerical simulations

This activity is in very close collaboration with experimental groups of the Laboratory or of GANIL of which the holder (D.D.) was or still is a member.  

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