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Charged Nariai black holes on the dark bubble
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abstract
In this paper, we realise the charged Nariai black hole on a braneworld from a nucleated bubble in AdS$_5$, known as the dark bubble model. Geometrically, the black hole takes the form of a cylindrical spacetime pulling on the dark bubble. This is realised by a brane embedding in an AdS$_5$ black string background. Identifying the brane with a D3-brane in string theory allows us to determine a relation between the fine structure constant and the string coupling, $\alpha_\text{EM} = \frac{3}{2} g_s$, which was previously obtained for a microscopic black hole. We also speculate on the consequences for the Festina Lente bound and neutrino masses.
Forward citations
Cited by 2 Pith papers
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Weak gravity at micron scales from dark bubble cosmology and its cosmological consequences
Dark bubble cosmology predicts gravity weakens below L~10^-5 m, yielding V=-G4M(1/rho - 3L^2/(2rho^3)+...) and a radiation-only inflationary phase.
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Dark bubble cosmology and the equivalence principle
In dark bubble cosmology, non-abelian gauge fields like gluons would couple to induced gravity with the wrong sign, making the proton's gravitational mass about 1% of its inertial mass and ruling out the scenario agai...
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