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Modified gravity and the atomic world

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If you have a question about this talk, please contact Xi Tong .

The existence of dark energy and dark matter hint that there is more to gravity than meets the eye.  A wide range of new theories, exhibiting a new scalar particle with a property called screening, indicate small-scale tests as the most promising route towards detection of new particles.  Atomic physics is especially promising.  I will discuss how pairs of atomic clocks are capable of searching for equivalence-principle violating scalar couplings to Standard Model particles, which hold the potential to detect quintessence, ultralight dark matter, and modified gravity.  Similarly, atom interferometry and atomic spectroscopy provide a window to detect new forces associated with new screened scalars as well.

This talk is part of the DAMTP Friday GR Seminar series.

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Goldsmiths 1, Lecture Theatre, Department of Materials Science & Metallurgy Sackler Lecture Theatre (Level 7) The Keith Peters Building, Cambridge Biomedical Campus in person & via zoom

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