The Lagrange Institute (Institut Lagrange de Paris, ILP), established in 2011, unites research groups from the Université Pierre et Marie Curie (UPMC) and CNRS, mainly from the Institut d'Astrophysique de Paris, the Laboratoire de Physique Nucléaire et Hautes Energies, and the Laboratoire de Physique théorique et Hautes Energies with internationally recognized research programs in theoretical and observational cosmology, (astro-)particle physics, and theoretical and experimental high energy physics. The Institute's mission is to advance foundational questions on the origin, constituents, dynamics, and fate of the Universe.


Connecting string theory to new observational and experimental constraints,
Using cosmic microwave background and large-scale structure observations to get insight into inflation and the underlying theoretical framework of the cosmic beginning,
Jointly analyzing cosmological observations and particle physics data to home in on nature of dark matter,
Searching for signatures of physics beyond the standard models of particle physics and cosmology,
Exploiting new mathematical approaches and numerical techniques to advance our understanding of the gravitational evolution of cosmic structures,
Creating innovative approaches to large-scale numerical simulation, analysis of large databases and statistical analysis relevant to the science themes of the ILP.
The time is ripe for these and other advances described in our science case. ILP teams have already advanced leading theoretical ideas, new computational methods and data analysis approaches, and privileged access to data from the great international projects of the coming decade, such as the Planck space mission revealing the primordial, quantum seeds of cosmic structure, the Large Hadron Collider at CERN probing beyond the Standard Model of particle physics, and the first astronomical surveys reaching across large fractions of the observable Universe and across cosmic time.