2020/06/30 by B. Guiot, A. Borquez, A. Deur +1 · 1 citation
Physics and Astronomy · #gr-qc #astro-ph.GA #hep-ph
paper · pdf · doi:10.1007/jhep11(2020)159
published as JHEP 11 (2020) 159 · 25 pages, 6 figures, 2 videos as ancillary files. Includes two new sections
arxiv created 2020/09/03 · arxiv updated 2020/12/07
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.