Institut de Physique Théorique
Direction de la Recherche Fondamentale  -  Saclay
UMR 3681 - INP
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Friday, September 22, 2017

Welcome to IPhT



Monday, Sep 25, 2017

14h00 Séminaire de physique statistique

Séminaire de physique statistique

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

Nicholas Sedlmayr

Wednesday, Sep 27, 2017

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

Susha Parameswaran

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


Cirano De Dominicis 1927 - 2017   

imgIt was with great sadness that we learned of the death of Cirano de Dominicis on April 4, 2017, at the age of 90 years.

Cirano de Dominicis, a former student of  École polytechnique and of Ecole des Mines, spent his entire career at the Atomic Energy Commission, where he participated in the founding of the theoretical physics group at Saclay. An outstanding scientist, his innovative work had profoundly influence on the fields of condensed matter physics, of the N-body problem, and later on the physics of disordered systems and spi glasses. He was Director of the Saclay theory group (then Service de Physique Théorique) from 1971 to 1979. He has been President of the French Society of Physics, and was the recipient of the Paul Langevin and Ricard Prizes of the French Society of Physics and of  the CNRS Silver Medal. He continued his research activities at the Institute and to be involved in scientific life with impressive energy, until ...

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F. David, 2017-04-06


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


Ecole de Physique: "Exact methods in low-dimensional statistical Physics"

Non-unitary ``Quantum mechanics''

Conference about the origins of Gravity

Beg Rohu 2017 "Out of Equilibrium Dynamics, Evolution and Genetics"

Succession of the IPhT's Head

¨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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