IEA CosmoGravity

French-Thai International Emerging Action in New challenges for cosmology and gravitation

IEA (PICS 07964) CosmoGravity


Prof. Ignatios Antoniadis

Prof. Auttakit Chatrabhuti

IEA CosmoGravity

IEA CosmoGravity


The PICS  CosmoGravity (New challenges for cosmology and gravitation), managed by Prof. Ignatios Antoniadis (CNRS, Laboratoire de Physique Theorique et Haute Energies, Sorbonne Universite, Faculte des Sciences, Campus Jussieu) in collaboration with Physics Department of Chulalongkorn University (Prof. Auttakit Chatrabhuti), Bangkok, is effective in 2018, 2019 and 2020.

Missions and research themes

The project is devoted to study  present challenges in gravity and cosmology, with emphasis a new approach to mass scale hierarchies, in view of the experimental and theoretical state-of-the art. We have recently entered an unprecedented era, with the CERN Large Hadron Collider (LHC) searching for new particles and interactions at energies ten times Present and forthcoming particle physics and cosmological data have a real chance of pointing to a deeper and more refined microscopic high-energy theory. We plan to develop and combine ideas and techniques from supersymmetry, string theory, extra dimensions and holography to make progress in this direction. Central questions are: (i) the origin of the different scales associated with a theory describing cosmology, gravitation and particle physics; (ii) the role of supersymmetry at a fundamental level and its possible non-linear realisation at low energies. 

MAIN projects of research

The main research objectives are: (1) Particle physics and cosmology of (approximate) de Sitter vacua in supergravity, towards the description of both inflation and present dark energy. (2) Non-linear supersymmetry and cosmology. (3) The Universe through gravitational waves. 

Our methodology relies heavily on effective field theory, symmetries and supergravity techniques. The results should be relevant to the ongoing and future observational programs in cosmology and gravitation, as well as to particle physics experiments searching for new physics beyond the Standard Model. In particular, we aim to identify interesting connections between cosmological observations, primordial gravitational waves and LHC results.

institutions and laboratories involved

• Ignatios Antoniadis (LPTHE – CNRS – Sorbonne Universite, Faculte des Sciences, Campus Jussieu, Pari


• Auttakit Chatrabhuti (Physics Department, Chulalongkorn University, Bangkok)


Ignatios Antoniadis (front row, center)  and Auttakit Chatrabhuti (front row, on the left) at a conference (Unveiling the fundamental laws of Nature), along with students. 

Ignatios Antoniadis and Auttakit Chatrabhuti (front row) at the Bangkok school on high-energy physics.