[Alumnos] HOY 13:30 hs - Seminario - Louis Perenon

[Secretaría de Ciencia y Técnica]

Hola a todos,

*Les recordamos que hoy tendremos el siguiente seminario a las *13:30 
*hs. en el Salón Meridiano. *Los esperamos 15 minutos antes del 
Seminario con café y galletitas.

*-- **
Secretaría de Ciencia y Técnica **
FCAGLP***
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  SEMINARIO: Louis Perenon

* *

Centre de Physique Théorique, Aix-Marseille Université


Título:From cosmic acceleration to a diagnostic of Horndeski theories


Resumen:

The study of cosmic acceleration and especially understanding its nature 
is nowadays one of the important branches in the field of cosmology. I 
would like to introduce some of the ideas that are put forward to 
explain this unsettling phenomenon. I will show why and how the path of 
modified gravity theories is taken by some cosmologist, rather than 
simply considering the cosmological constant. Then, I wish to present a 
novel approach, the effective field theory of dark energy. This allows 
one to study in a unified way all modified gravity models containing a 
single scalar field added to Einstein's equations. I would like to also 
show how a rich phenomenology of large scale structures observables 
arises. I would like to finish by highlighting how certain correlations 
between these observables allows one to discard between modified gravity 
theories or as to the type of dark energy embedded within these theories.

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