Dark Matter in a Warped Fifth Dimension: A Portal to a Hidden Dark Sector Probed by Gravitational Waves
To the point
European physicists propose that dark matter originates from a warped fifth dimension where fermions access via quantum portals to form dark-matter relics that influence gravity and potentially address the Higgs hierarchy problem, with gravitational-wave observations from detectors like LIGO and Virgo offering the most promising test, though the idea remains speculative until confirmed.
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