Statut | Confirmé |
Série | RENC-THEO |
Domaines | hep-th |
Date | Jeudi 14 Mars 2019 |
Heure | 10:00 |
Institut | IHP |
Salle | 314 |
Nom de l'orateur | Hartong |
Prenom de l'orateur | Jelle |
Addresse email de l'orateur | |
Institution de l'orateur | Edinburgh U. |
Titre | Non-relativistic Gravity |
Résumé | In this talk I will discuss the expansion of general relativity in inverse powers of the speed of light. This expansion can be truncated at any desired order and, when truncated at the next- to-leading order, it can be used to derive an action principle for a diffeomorphism invariant description of non-relativistic gravity. This describes Newtonian gravity as well as strong gravity extensions thereof (e.g. due to time dilation effects). I will show how to couple such a theory to matter (point particles, scalar fields and fluids) and use this to show that the Tolman-Oppenheimer-Volkov star solution and the Friedmann equations can both be viewed as solutions to the equations of motion of matter coupled non-relativistic gravity. By looking at geodesics in a spherically symmetric background one can show that the phenomenon of perihelion precession is also described by this theory. Time permitting I will end with some comments about string and holographic extensions of these results. |
Numéro de preprint arXiv | |
Commentaires | |
Fichiers attachés |
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