[Todos] GGI Tea Breaks - Adam Riess & Licia Verde - Wed. March 17th - 4:00PM CET (NOTICE OF CHANGE OF TIME)

[Ernesto Arganda Carreras]

En 15 mar. 2021 10:52, en 10:52, Ernesto Arganda Carreras <ernesto.arganda en fisica.unlp.edu.ar> escribió:
>
>
>En 15 mar. 2021 8:56, en 8:56, Agustin Sabio Vera
><a.sabio.vera en gmail.com> escribió:
>>---------- Forwarded message ---------
>>De: segreteria GGI <segreteriaggi en fi.infn.it>
>>Date: lun, 15 mar 2021 a las 6:56
>>Subject: GGI Tea Breaks - Adam Riess & Licia Verde - Wed. March 17th -
>>4:00PM CET (NOTICE OF CHANGE OF TIME)
>>To: <ggi.participants en lists.fi.infn.it>,
>><ggi.students en lists.fi.infn.it>
>>
>>
>>
>>
>>
>>Dear all,
>>
>>we are happy to announce a new Focus Meeting on the theory of
>>fundamental
>>interactions within the *GGI Tea Breaks’* series.
>>It will take place via Zoom at https://infn-it.zoom.us/j/86302343715
>>
>>on
>>
>>*Wednesday March 17th *at* 4:00 PM *(CET) *(NOTICE OF CHANGE OF FOCUS
>>MEETING TIME)*
>>
>>and will be given by
>>
>>*Adam Riess *(Johns Hopkins Univ.) &* Licia Verde *(ICREA)
>>
>>They will talk about * "The trouble with H0"*
>>
>>Abstract:  The Hubble constant H0 is one of the most important
>>parameters
>>in the cosmological model, setting the size and age scales of the
>>Universe.
>>The distance ladder relying on supernovae yields values of H0 higher
>>than
>>those inferred from the inverse distance ladder, which is instead
>based
>>on
>>early-time physics and relies on observations typically involving the
>>cosmic microwave background, in combination with galaxy surveys. Such
>>discrepancy has come to be known as the 'Hubble tension'. In this
>Focus
>>Meeting Adam Riess and Licia Verde will illustrate the different
>>methods of
>>measurement of H0, and analyze possible resolutions of the Hubble
>>tension.
>>The Hubble tension has motivated the exploration of extensions to the
>>standard cosmological model in which higher values of H0 can be
>>obtained
>>from CMB measurements and galaxy surveys. The trouble, however, goes
>>beyond
>>H0; such modifications affect other quantities too, such as cosmic
>>times
>>and the matter density. Any Hubble trouble has implications well
>beyond
>>H0
>>itself. Licia Verde will analyze the tension in both a model-dependent
>>and
>>a model-independent way, and will propose a new representation of
>>parameter
>>constraints that, hopefully, will help us find a resolution.
>>A streamlined distance ladder constructed from infrared observations
>of
>>Cepheids and type Ia supernovae with ruthless attention paid to
>>systematics
>>now provides < 2% precision and offer the means to do much better. By
>>steadily improving the precision and accuracy of the Hubble constant,
>>we
>>now see evidence for significant deviations from the standard model,
>>referred to as LambdaCDM, and thus the exciting chance, if true, of
>>discovering new fundamental physics such as exotic dark energy, a new
>>relativistic particle, or a small curvature to name a few
>>possibilities.
>>Adam Riess will review recent and expected progress, most recently
>>based on
>>measurements from Gaia EDR3 released in December, 2020.
>>
>>Ample space for questions and discussion will be allocated at the end
>>of
>>the Focus Meeting.  We have also created an online Q&A space for each
>>seminar. You can submit your question by filling the form
>><https://docs.google.com/forms/d/e/1FAIpQLSfskqHeUko1e_GxLng6fDquV4JANEZQARIa2m9YF_voyxs6JQ/viewform>.
>>The answers will be published soon after.
>>For more info see  https://www.ggi.infn.it/seminars
>>
>>Please forward this announcement to anyone who might be interested.
>>We wait for your participation,
>>
>>The Organising Committee of the GGI Tea Breaks
>>
>>
>>------------------------------------------------------------------------
>>
>>
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