✉news SciencePhysics first seen 2 h ago, last 13 min ago, peak #20
Poltergeist Mechanism Proposed to Amplify Early-Universe Gravitational Waves
Original: Poltergeist mechanism: Enhancement of scalar-induced gravitational waves with early matter-dominated era
Physicists have described a new 'poltergeist mechanism' in which a brief early matter-dominated era in the cosmos could substantially enhance scalar-induced gravitational waves, the ripples generated by density fluctuations rather than black hole mergers. The work, published in an American Physical Society journal, suggests such an era would amplify the signal, potentially bringing these primordial waves within reach of current and future gravitational-wave detectors.
Why now: A new theoretical mechanism for boosting primordial gravitational waves is relevant to ongoing detector searches and early-universe cosmology.
American Physical Societyscalar-induced gravitational wavesearly matter-dominated era
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Evidence
- Poltergeist mechanism: Enhancement of scalar-induced gravitational waves with early matter-dominated era · APS Journals
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