BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:The Higgs-Gravity Connection DTSTART:20220525T160000Z DTEND:20220525T180000Z DTSTAMP:20260515T234425Z UID:320886ac-7d46-4257-8ea2-60a5a06811dd SEQUENCE:11 CREATED:20220404T170544Z DESCRIPTION:Abstract:The geometrical formulation of gravity emerges natura lly from the equivalence principle\, hinting toward an intriguing connecti on with the concepts of mass and inertia. As already observed by Einstein\ , General Relativity can be expressed in a variety of ways\, including not only the most common metric approach but also the Palatini\, teleparallel \, and Einstein-Cartan formulations. These realizations differ mainly in t heir choice of fundamental degrees of freedom\, being otherwise mathematic ally equivalent as pure gravity is concerned. The degeneracy among differe nt gravity incarnations breaks down\, however\, in the presence of non-min imal couplings to matter\, as happens unavoidably when accounting for the Standard Model Higgs. This opens the possibility of testing the nature of gravity with cosmological observations. In this talk\, I will provide an o verview of this fascinating paradigm\, describing its predictions\, genera lizations\, open questions\, and implications for the infamous hierarchy p roblem. LAST-MODIFIED:20220509T102821Z LOCATION:PA1\, Pavilhão de Matemática URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/tba/ X-ALT-DESC;FMTTYPE=text/html:

Abstract:
The geometrical formulation of gravity eme rges naturally from the equivalence principle\, hinting toward an intrigui ng connection with the concepts of mass and inertia. As already observed b y Einstein\, General Relativity can be expressed in a variety of ways\, in cluding not only the most common metric approach but also the Palatini\, t eleparallel\, and Einstein-Cartan formulations. These realizations differ mainly in their choice of fundamental degrees of freedom\, being otherwise mathematically equivalent as pure gravity is concerned. The degeneracy am ong different gravity incarnations breaks down\, however\, in the presence of non-minimal couplings to matter\, as happens unavoidably when accounti ng for the Standard Model Higgs. This opens the possibility of testing the nature of gravity with cosmological observations. In this talk\, I will p rovide an overview of this fascinating paradigm\, describing its predictio ns\, generalizations\, open questions\, and implications for the infamous hierarchy problem.

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