Institut de Physique Théorique
Direction de la Recherche Fondamentale  -  Saclay
UMR 3681 - INP
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Saturday, October 21, 2017

Welcome to IPhT



Friday, Oct 27, 2017

10h15 Journal Club

Journal Club

(voir dans annonce)

Adam Bzowski

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.


Programme PSI2 DARKMOD at IPhT & IAS   

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


String Theory D3-brane constructions of physics beyond the Standard Model ruled out by the LHC   
imgThe standard model of particle physics arises in string theory from open strings ending on membranes (D-branes) extended along the three-dimensional space. Closed strings propagating along the whole ten-dimensional world of string theory play the role of the hidden sector, communicating to the matter sector the breaking of supersymmetry that takes place in the extra dimensions in the form of “soft terms” (which have this name because they break supersymmetry without causing ultraviolet divergences).
However, not any soft-supersymmetry-breaking Lagrangian can be obtained this way since the string theory equations of motion and consistency conditions impose relations between the soft couplings. Iosif Bena, Mariana Graña and collaborators have shown that for models realized on D3-branes the trace of the square of the boson mass matrix is equal to the trace of the square of the fermion mass matrix at tree level, and this equality holds at least up to two loops [1].  String theory thus dictates ...

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C. Pepin, 2017-03-22


Succession of the IPhT's Head   

Michel Bauer-François David

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Michel Bauer has been the Head of the IPhT for 6 years, until 31 December 2016. Not only he is a  great scientific with a lot of human qualities, but we are especially grateful to him for the kindness and the friendliness for countless solicitations from everyone.
François David is his successor from the First of January 2017. We thank him a lot for having accepted this  task, essential for the institute,  and we wish him the most of happiness and energy for his new functions.


E. De-laborderie, 2017-01-06


¨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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