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SUMMARY:Quantum Forces in the Standard Model and Dark Sector
DTSTART;VALUE=DATE-TIME:20260604T060000Z
DTEND;VALUE=DATE-TIME:20260604T070000Z
DTSTAMP;VALUE=DATE-TIME:20260701T182800Z
UID:indico-event-5071@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Bingrong Yu(郁槟榕) (Cornell University)\n\nDr. B
 ingrong Yu (郁槟榕) (Cornell University)Title: Quantum Forces in the St
 andard Model and Dark SectorAbstract: Quantum forces are long-range intera
 ctions arising from quantum fluctuations of light mediator fields — eith
 er fermionic or bosonic — that couple feebly to matter. Despite their we
 akness\, such forces can leave observable imprints in the early Universe a
 nd in precision measurements. In this talk\, I will discuss quantum forces
  both within the Standard Model and in the dark sector. First\, the Standa
 rd Model predicts a unique quantum force mediated by the exchange of two n
 eutrinos. Although extremely weak\, this "neutrino force" can manifest in 
 atomic systems and in backgrounds of cosmic\, solar\, or reactor neutrinos
 . I will present our recent progress in probing this effect and show that 
 its contribution in atoms may have important implications for precision te
 sts of the Standard Model\, including low-energy determinations of the Wei
 nberg angle. I will then turn to quantum forces beyond the Standard Model.
  In the perturbative regime\, I will discuss axion-mediated quantum forces
  and their implications for axion detection experiments. In the non-pertur
 bative regime\, I will show how quantum forces can significantly modify da
 rk matter annihilation and self-interactions beyond the Born approximation
 \, and discuss the resulting implications for cosmology.Biography: Dr. Bin
 grong Yu is currently a postdoctoral researcher in the particle theory gro
 up at Cornell University. Before joining Cornell\, he received his Ph.D. f
 rom the Institute of High Energy Physics (IHEP) in 2023 and his B.Sc. from
  Nanjing University in 2018. His research interests broadly span physics b
 eyond the Standard Model\, including dark matter\, neutrinos\, axions\, ea
 rly-Universe cosmology\, and effective field theory. His recent work focus
 es on developing new ideas for probing light new physics in cosmology and 
 in precision laboratory experiments.Alternatively online link:https://meet
 ing.tencent.com/dm/xpy5ZCBqxGr4ID：978887637  \n\nhttps://indico-tdli.s
 jtu.edu.cn/event/5071/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/5071/
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