Gravitation

Gravitational problems constitute for the theoretical physics team a cross-disciplinary field of application of the theoretical and numerical tools developed in the group's two other themes ( dynamical systems and quantum information ). We are interested in both classical gravity and quantum gravity theories.

Our main study topics are:

• Astronomical dynamical systems (solar system, asteroids, comets, binary stars)
• Dark matter in the solar system (capture mechanism, distribution, possible low energy experiments)
• Black holes and wormholes (geometry, information paradox, quantization, chaotic horizons, traces in gravitational wave signals)
• Quantum gravity models (brane worlds, matrix models in string theory, noncommutative geometry, LQG)

Staff: Quentin Ansel, Nabile Boussaïd, José Lages, Guillaume Rollin, Michaël Sarrazin, David Viennot

Recent publications:

• Nabile Boussaïd, Andrew Comech et Niranjana Kulkarni
  On spectral stability of one- and bi-frequency solitary waves in Soler model in (3+1)D
  math.ap, 1-23, 2024
  Site de l'éditeur arXiv HAL
  
• Michaël Sarrazin et Coraline Stasser
  Violation of C/CP symmetry induced by a scalar field emerging from a two-brane universe: A gateway to baryogenesis
  Phys. Rev. D, 110(2), 023520, 2024
  Site de l'éditeur ADS arXiv HAL
  
• David Viennot
  Geometric phases, Everett's many-worlds interpretation of quantum mechanics, and wormholes
  Quant.Stud.Math.Found., 11, 307, 2024
  Site de l'éditeur arXiv HAL
  
• David Viennot
  Metrics and geodesics on fuzzy spaces
  J. Phys. A, 57(42), 425201, 2024
  Site de l'éditeur arXiv HAL
  
• Andrew Comech, Niranjana Kulkarni, Nabile Boussaïd , Jesús Cuevas-Maraver
  Stable bi-frequency spinor modes as Dark Matter candidates
  J. High Energy Physics , JHEP10(2025), 082, 2025
  Site de l'éditeur HAL arXiv
  
• Antoine Honet et Michaël Sarrazin
  Exciton binding energies in 2D materials: Insights from braneworld physics
  Physica B: Condensed Matter, 717, 417760, 2025
  Site de l'éditeur HAL
  
• Michaël Sarrazin
  Stellar light scattering as a probe for a braneworld-induced baryogenesis scenario
  Eur. Phys. J. C, 85(10), 1189, 2025
  Site de l'éditeur HAL
  
• David Viennot
  Quasicoherent states of noncommutative D2-branes, Aharonov-Bohm effect and quantum Möbius strip
  arXiv