BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Inflation from spontaneously broken Weyl invariance in theories  w
 ith torsion
DTSTART:20181105T140000
DTEND:20181105T153000
DTSTAMP:20260414T102859Z
UID:f8851656fa2911e7723e6dc34a609ee56c3b909e6250f055a30c363f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Stefano Lucat (University of Utrecht)\nIntroduction of the to
 rsion tensor on the space-time manifold \nleads to a Weyl invariant geome
 try\, in which the torsion trace acts as \na "U(1)" compensating field fo
 r the conformal transformations. Such \nsymmetry can be extended to the w
 hole matter sector included in the \nstandard model by coupling the Higgs
  scalar (and all other possible \nfundamental scalars) to the torsion. A 
 relevant question is then \nwhether such framework can be used to describ
 e cosmic inflation\, as a \nspontaneous symmetry breaking phenomenon. It 
 turns out that this is \nindeed possible because the Weyl invariance impo
 ses a distinct field \nspace geometry\, which introduces a slow roll plat
 eau in the otherwise \ntoo steep quartic potential dictated by Weyl symme
 try. The model can \nhave observable consequences that distinguish it fro
 m other \ninflationary scenarios\, at least under some choices of initial
  \nconditions.
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR