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DTSTART:20240101T000000
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DTSTART;TZID=UTC:20250313T100000
DTEND;TZID=UTC:20250313T110000
DTSTAMP:20260411T174052
CREATED:20250213T091650Z
LAST-MODIFIED:20250313T104702Z
UID:9097-1741860000-1741863600@www.lapth.cnrs.fr
SUMMARY:New Physics from the “Hubble Tension”
DESCRIPTION:Speakers: Vivian Poulin (LUPM (CNRS & U. de Montpellier))\nOver the last decade\, measurements of the expansion rate of the universe today\, H0\, made with cepheid-calibrated SN1a have become increasingly discrepant with the value predicted from the ΛCDM model when fit to CMB data. After a brief review of the experimental situation\, I will show the potential implications of this “Hubble tension” for new physics. I will argue that it points to some new mechanism at play in the pre- recombination universe (i.e.\, z > 1000)\, rather than a new dynamical effect at late-time (i.e. 0 < z < 1). I will discuss some model-independent implications of the Hubble tension that can help shed light on its origin.\nhttps://indico.in2p3.fr/event/35427/
URL:https://www.lapth.cnrs.fr/event/vivian-poulin/
LOCATION:Auditorium Vivargent (LAPTh)
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