Supersymmetric chameleons and ultra-local models

Abstract : Super-chameleon models where all types of matter belong to three secluded sectors, i.e. the dark, supersymmetry breaking and matter sectors, are shown to be dynamically equivalent to ultra-local models of modified gravity. In the dark sector, comprising both dark matter and dark energy, the interaction range between the dark energy field and dark matter is constrained to be extremely short, i.e. shorter than the inverse gravitino mass set by supersymmetry breaking. This realises an extreme version of chameleon screening of the dark energy interaction. On the other hand, the baryonic matter sector decouples from the dark energy in a Damour-Polyakov way. These two mechanisms preclude the existence of any modification of gravity locally in the Solar System due to the presence of the super-chameleon field. On larger scales, the super-chameleon can have effects on the growth of structure and the number of dark matter halos. It can also affect the dynamics of galaxies where the fifth force interaction that it induces can have the same order of magnitude as Newton's interaction.
Type de document :
Article dans une revue
Physical Review D, American Physical Society, 2016, 94 (023512 ), 〈10.1103/PhysRevD.94.023512〉
Liste complète des métadonnées

Littérature citée [9 références]  Voir  Masquer  Télécharger

https://hal-cea.archives-ouvertes.fr/cea-01461805
Contributeur : Emmanuelle De Laborderie <>
Soumis le : mercredi 8 février 2017 - 14:32:06
Dernière modification le : jeudi 15 mars 2018 - 15:06:33
Document(s) archivé(s) le : mardi 9 mai 2017 - 13:38:41

Fichier

1605.05946.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Philippe Brax, Luca Alberto Rizzo, Patrick Valageas. Supersymmetric chameleons and ultra-local models. Physical Review D, American Physical Society, 2016, 94 (023512 ), 〈10.1103/PhysRevD.94.023512〉. 〈cea-01461805〉

Partager

Métriques

Consultations de la notice

55

Téléchargements de fichiers

22