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 → 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.
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Guiot, B., Borquez, A., Deur, A. et al. Graviballs and dark matter. J. High Energ. Phys. 2020, 159 (2020). https://doi.org/10.1007/JHEP11(2020)159
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DOI: https://doi.org/10.1007/JHEP11(2020)159