Article developed by UFC and UFABC researchers is highlighted in the international media
The work entitled “Black holes with a cosmological constant in bumblebee gravity” authored by researchers Roberto Vinhaes Maluf (UFC) and Juliano Neves (UFABC) has been receiving some prominence in international media. The manuscript originally released in the Arxivs repository in November 2020 (arXiv: 2011.12841v2) and recently accepted for publication in the journal Physical Review D presents black hole solutions with cosmological constant in a modified theory of gravity, called “bumblebee gravity”. One of the possible applications of the model developed by the authors is to potentially explain the origin of Dark Energy – the phenomenon responsible for the accelerated expansion observed in the universe. In particular, the results obtained relate the expected vacuum value (vev) of the bumblebee field with the angular size of the black hole’s shadow, demonstrating that the shadow’s radius is smaller than predicted by Einstein’s usual theory. It is worth commenting that this result represents a new way of confronting Einstein’s theory with alternative models of gravity, exploring the physics emerging from the recent image of a black hole (M87 *) announced by the Event Horizon Telescope collaboration in 2019.
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Source: Professor Roberto Vinhaes Maluf (PPGFís-UFC) – firstname.lastname@example.org