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SUMMARY:Bingrong Yu\, Cornell University\, [HET Seminar] Quantum Forces in
  the Standard Model and Dark Sector
DTSTART:20260709T150000Z
DTEND:20260709T170000Z
DTSTAMP:20260716T151000Z
UID:indico-event-32580@indico.bnl.gov
DESCRIPTION:https://bnl.zoomgov.com/j/16010362754?pwd=Z1l1SS9JUDlyR1hSUHNy
 aDV1dTZHUT09\nQuantum forces are long-range interactions arising from quan
 tum fluctuations of light mediator fields — either fermionic or bosonic 
 — that couple feebly to matter. Despite their weakness\, such forces can
  leave observable imprints in the early Universe and in precision measurem
 ents. In this talk\, I will discuss quantum forces both within the Standar
 d Model and in the dark sector. First\, the Standard Model predicts a uniq
 ue quantum force mediated by the exchange of two neutrinos. Although extre
 mely weak\, this "neutrino force" can manifest in atomic systems and in ba
 ckgrounds of cosmic\, solar\, or reactor neutrinos. I will present our rec
 ent progress in probing this effect and show that its contribution in atom
 s may have important implications for precision tests of the Standard Mode
 l\, including low-energy determinations of the Weinberg angle. I will then
  turn to quantum forces beyond the Standard Model. In the perturbative reg
 ime\, I will discuss axion-mediated quantum forces and their implications 
 for axion detection experiments. In the non-perturbative regime\, I will s
 how how quantum forces can significantly modify dark matter annihilation a
 nd self-interactions beyond the Born approximation\, and discuss the resul
 ting implications for cosmology.\n\nhttps://indico.bnl.gov/event/32580/
LOCATION:Small Seminar Room
URL:https://indico.bnl.gov/event/32580/
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