Institut de Physique Théorique
Direction de la Recherche Fondamentale  -  Saclay
UMR 3681 - INP
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Friday, January 19, 2018

Welcome to IPhT

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Agenda

Today

10h00 Cours de physique théorique de Saclay

Cours de physique théorique de Saclay

Orme des Merisiers - Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Bertrand Eynard

Tuesday, Jan 23, 2018

16h00 Séminaire de physique des particules et de cosmologie

Séminaire de physique des particules et de cosmologie

Orme des Merisiers - Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Brando Bellazzini

Wednesday, Jan 24, 2018

14h15 Séminaire de matrices, cordes et géométries aléatoires

Séminaire de matrices, cordes et géométries aléatoires

Orme des Merisiers - Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Juan Diaz Dorronsoro

Friday, Jan 26, 2018

10h00 Cours de physique théorique de Saclay

Cours de physique théorique de Saclay

Orme des Merisiers - Salle Claude Itzykson, Bât. 774 Orme des Merisiers

Bertrand Eynard


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The Institut de Physique Théorique (IPhT) is a laboratory of fundamental research, located in Saclay, about 20 km south-west of Paris.

The research performed at the IPhT aims at better understanding the laws which govern our universe and its organisation. It encompasses most of the great subjects of modern theoretical physics:

The IPhT comprises about fifty permanent physicists (2/3 CEA, 1/3 CNRS), about thirty PhD students and postdocs, assisted by a support staff of about ten people. The IPhT also hosts permanently many short term visitors.

News

"Deconstructing the string landscape": A new ERC consolidator grant for Mariana Graña !   

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Mariana Graña of IPhT has been awarded an ERC consolidator grant for her project "Deconstructing the string landscape". Congratulations Mariana !

Despite its uniqueness, string theory has a “landscape” of effective partly phenomenological low-energy solutions with very different observable physics. The objective of her project is to "deconstruct" this landscape, and determine what parts of it can be promoted to consistent full-fledged string theory solutions, and what parts are inconsistent. It aims at understanding if the present geometrical landscape paradigm can be put on solid ground, or if more inventive alternatives such as “non-geometric landscape” have to be searched.

 
F. David, 2018-01-03

 

Do LIGO/VIRGO experiments put constraints on dark energy ?   

Artist's depiction of a neutron star collision after inspiral. (Credit: NASA/Swift/Dana Berry) The recent observation of gravitational waves from a neutron star binary inspiral by LIGO/Virgo and its electromagnetic counterpart in the form of a gamma-ray burst implies that gravitational waves travel at the speed of light, with deviations smaller than a part over million billions. Two Letters, one by Filippo Vernizzi (IPhT) and the other by Miguel Zumalaccaregui (currently MSCA fellow at BCCP Berkeley and IPhT), recently published in Physical Review Letters and chosen for the Editors' Suggestion, show dramatic consequences of this experimental result for models of dark energy and modified gravity. In some of these theories, dark energy acts as a refractive media for the propagation of gravity and a large class of them is ruled by this observation. The papers explore the implications for many known models and present the most general scalar-tensor theory leaving the speed of gravity unaffected. These two articles have been inspired by the many stimulating discussions at the DARK ...

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F. David, 2018-01-03

 

Programme PSI2 DARKMOD at IPhT & IAS   

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Dark Energy and Modified-Gravity cosmologies: DARKMOD   from September 11, 2017 to October 6, 2017

The acceleration of the expansion of the Universe at low redshifts has not received a satisfactory theoretical explanation yet. The value of a possible cosmological constant remains a puzzle and alternative approaches, dark energy or modified gravity, are still being developed. In view of the future observations by galaxy surveys, such as EUCLID for instance, it is timely to gather experts on both the theoretical aspects of dark energy and modified gravity, together with phenomenologists and observers. This 4-week workshop will provide an opportunity to discuss most aspects of both dark energy and modified gravity, from their theoretical construction to their link with observational cosmology. 

F. David, 2017-08-08

 

¨Le Monde¨ 2016 Research Prize for Rémi Louf

2016 Philippe Meyer Prize in Theoretical Physics for Lenka Zdeborova

2016 Thibaud Prize for Gregory Soyez

Abragam prize of the National Academy of Sciences for Cristina Bena


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