Limiting the number of extra dimensions with shortcuts

ZC Lin, H Yu, Y Gong - Physical Review D, 2024 - APS
In higher-dimensional theories, a graviton propagating in the bulk can follow a shorter path,
known as a shortcut, compared to a photon propagating in a four-dimensional spacetime …

Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions

AA Popov, SG Rubin, AS Sakharov - Universe, 2024 - mdpi.com
The origin and evolution of supermassive black holes (SMBHs) in our universe have
sparked controversy. In this study, we explore the hypothesis that some of these black holes …

[PDF][PDF] Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions. Universe 2024, 10, 166

AA Popov, SG Rubin, AS Sakharov - 2024 - inspirehep.net
The origin and evolution of supermassive black holes (SMBHs) in our universe have
sparked controversy. In this study, we explore the hypothesis that some of these black holes …