L2C

Theory of Fundamental Interactions (TIF)

Coordinator : Emmanuel ROUSSEAU

CNRS Researchers:
ALEXANDROV Sergey
KNEUR Jean-Loïc
ROUSSEAU Emmanuel

Teaching Researchers (UM) :
FELBACQ Didier

Emeriti:
FATEEV Vladimir
MITTER Pronob
NEVEU André
POLARSKI David		PhD Students :
LENDRIN Morgane

Researcher under contract:
NAVEZ Patrick
Publications
Theses

The TIF team focuses on the quantum description of the four fundamental forces of the Universe. More specifically, it conducts research in quantum gravity, cosmology, phenomenological theories beyond the Standard Model, and light-matter interaction. The team also investigates how physics and quantum technologies can contribute to the field of artificial intelligence.

The TIF team is part of several research networks: the international IRN Terascale network, the national AT-PEM program, and the European project ITN HIDDeN. It also organizes the annual mini-workshop on Cosmology and High Energy Physics.

Research fields:

  • Phenomenology in Particle Physics: Field theory and renormalization group, phase transition; quantum chromodynamics (QCD); supersymmetric models and dedicated codes; Beyond Standard Model: composite Higgs models and holography; dark matter.
  • Quantum Gravity, String Theory: Compactifications on Calabi-Yau manifolds; Effective theories; Dualities and non-perturbative effects; Black holes; Canonical methods.
  • Mathematical Physics: BPS indices and topological invariants; Integrability; Modular and mock modular forms; Homogenization techniques and singular perturbations; Characteristic classes and algebraic topology in condensed matter.
  • Light-Matter Interaction: Non-relativistic quantum field theory; Semi-classical approaches; Maxwell-Bloch equations; quantum metamaterials. 
  • Quantum Artificial Intelligence: Quantum technologies for neural networks; Quantum reservoir computing.
  • Cosmology: Dark Energy parameterization and phenomenology, Scalar-Tensor and f(R) Modified Gravity Dark Energy models, Many-fields Inflationary Models, Quantum-to-Classical transition of primordial inflationary perturbations.

Funding : QRC-4-ESP

The TIF team is involved in the QRC-4-ESP project (https://www.qrc-4-esp.eu), funded by the European Innovation Council, which aims to implement the principles of reservoir computing using physical systems.

More specifically, the TIF team seeks to develop a general theory of prediction using reservoirs described by the laws of classical or quantum physics. We also aim to optimize predictions obtained using reservoirs made of either superconducting qubits or luminescent defects in silicon carbide.

Recent theses :