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Center for Astrophysics Research and Technologies Seminar Series Information


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A Symmetry of Cosmological Observables, and a High Hubble Constant as an Indicator of a Mirror World Dark Sector

Tuesday August 31, 2021
2:00 pm

 Presenter:  Francis-Yan Cyr-Racine, UNM
 Series:  Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
 Abstract:  We point out a previously unnoticed symmetry of many important cosmological observables and show that a cosmological model with a “mirror world” dark sector can exploit this symmetry to completely eliminate the Hubble tension. Our work motivates searches for both a more detailed particle physics model that satisfies laboratory constraints and a means of increasing the cosmic photon scattering rate that respects observational bounds on the primordial helium abundance.
 Host:  Francis-Yan Cyr-Racine
 Location:  PAIS-3205, PAIS

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