Description du projet
De nouvelles approches théoriques permettent de décoder la nature quantique des trous noirs
En s’appuyant sur la correspondance holographique, un cadre théorique bien établi, des scientifiques ont réalisé d’importants progrès dans la compréhension des propriétés quantiques énigmatiques des trous noirs. Combinant la mécanique quantique et la relativité générale, ce cadre traite les trous noirs comme des hologrammes. Cependant, cette correspondance a été principalement étudiée dans les espaces-temps anti de Sitter, qui présentent une courbure négative. Le projet CeleBH, financé par le CER, vise à appliquer la correspondance holographique aux espaces-temps asymptotiquement plats, caractérisés par l’absence de courbure à l’infini, c’est-à-dire dans les régions éloignées des trous noirs. Les chercheurs combineront l’holographie céleste, qui postule que la gravité quantique dans un espace plat peut être décrite par une théorie conforme des champs célestes vivant sur la sphère à l’infini, et les symétries à l’infini qui apparaissent à proximité des horizons des trous noirs.
Objectif
Black holes are at the root of the most striking puzzles that arise when attempting to combine quantum mechanics and general relativity; they are therefore thought to be key to a formulation of a theory of quantum gravity. In recent years, progress in our understanding of the elusive quantum nature of black holes has been made thanks to the so-called holographic correspondence, which has provided theoretical physicists with a powerful tool to study quantum gravity. However, these methods are so far only fully developed for anti-de Sitter spacetimes, whereas understanding realistic black holes would require to develop a holographic correspondence for asymptotically flat spacetimes.
The aim of this project is to make major steps towards a holographic description of quantum gravity in asymptotically flat spacetimes, and to address some of the unresolved key issues in black hole physics, especially in understanding the mysterious origin of their vast entropy. To do so, I propose to combine two novel emergent ideas: The first is a new approach to holography in flat spacetimes called celestial holography, which proposes that quantum gravity in flat space can be described by a celestial conformal field theory living on the sphere at infinity. The second is based on the recent discovery, in my previous works, of the existence of intriguing infinite-dimensional symmetries that appear close to black holes’ event horizon. The infinite set of asymptotic conservation laws in the presence of horizons is awaiting to be unraveled, as it will reveal unexplored constraints on information flow for black holes in flat spacetimes.
Thanks to this unique combination of powerful approaches based on symmetry principles, my research project aims at addressing the challenge of a holographic formulation of spacetimes that include realistic black holes, such as the ones we observe in the sky.
Champ scientifique
- natural sciencesphysical sciencesrelativistic mechanics
- natural sciencesphysical sciencesquantum physics
- natural sciencesphysical sciencesastronomyastrophysicsblack holes
- natural sciencesmathematicsapplied mathematicsmathematical physicsconformal field theory
- natural sciencesphysical sciencestheoretical physics
Programme(s)
- HORIZON.1.1 - European Research Council (ERC) Main Programme
Thème(s)
Régime de financement
ERC - Support for frontier research (ERC)Institution d’accueil
34136 Trieste
Italie