Cosmological Impacts of Nonstandard Neutrino Interactions

  • Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars

November 26, 2024 2:00 PM - November 26, 2024 3:00 PM
PAIS 3205

Host:
Francis-Yan Cyr-Racine
Presenter:
John Houghteling (UNM)
Despite the best efforts of particle physicists, the true nature of neutrinos remains a mystery. Their feeble interaction strengths make directly measuring their properties phenomenally difficult, but cosmology offers another probe. In the radiation-dominated epoch, neutrinos make up over 40% of the energy density of the universe, meaning their interactions–including any nonstandard interactions–become cosmologically significant. In this talk, I will introduce two models that produce stronger neutrino self-interactions: one simple and one more complex. By comparing how these models fare when confronted with data, we can explore why this intriguing scenario with stronger neutrino interactions is allowed and work towards improving our neutrino models. By generalizing these conclusions, we can further add to our understanding of both the Hubble and Sigma-8 tensions, aiding in the work toward a single solution to the biggest problems in modern cosmology.

Upcoming Events

Using Experimental Petrology to Find Geochemically Habitable Exoplanets
Kara Brugman (UNM EPS/IOM)
CART Astrophysics Seminar Series
Feb. 12, 2:00 PM - Feb. 12, 3:00 PM
PAIS 3205

Does the path to quantum advantage lie in spin-boson quantum computers?
Alaina Green
CQuIC Seminars
Feb. 12, 3:30 PM - Feb. 12, 4:30 PM
PAIS 2540

No Colloquium Today (February 13)

Physics and Astronomy Colloquium
Feb. 13, 3:30 PM - Feb. 13, 4:30 PM
PAIS 1100

Recent physics and detector studies at LANL for the future Electron-Ion Collider (EIC)
Xuan Li (LANL)
Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
Feb. 17, 2:00 PM
PAIS 3205

When innovative science intersects with the needs of public health and communities
Eliane El Hayek
Sigma Xi Public Talk
Feb. 19, 5:00 PM
Physics, Astronomy, & Interdisciplinary Science (PAIS), 210 Yale Blvd NE Rm 1100