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Graviballs and dark matter

Authors :: A. Deur
K. Werner
B. Guiot
A. Borquez
Laboratoire de physique subatomique et des technologies associées (SUBATECH)
Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST)
Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique)
Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)
Source :: Journal of High Energy Physics, JHEP, JHEP, 2020, 11, pp.159. ⟨10.1007/JHEP11(2020)159⟩, Journal of High Energy Physics, Vol 2020, Iss 11, Pp 1-22 (2020)
Publication Year :: 2020
Publisher :: Springer, 2020.
Abstract: We investigate the possible existence of graviballs, a system of bound gravitons, and show that two gravitons can be bound together by their gravitational interaction. This idea connects to black hole formation by a high-energy $2\to N$ scattering and to the gravitational geon studied by Brill and Hartle. Our calculations rely on the formalism and techniques of quantum field theory, specifically on low-energy quantum gravity. By solving numerically the relativistic equations of motion, we have access to the space-time dynamics of the (2-gravitons) graviball formation. We argue that the graviball is a viable dark matter candidate and we compute the associated gravitational lensing.<br />25 pages, 6 figures, 2 videos as ancillary files. Includes two new sections