Q-DYN: Non-equilibrium dynamics of quantum many-body systems

Project funded by French National Research Agency (ANR), grant ANR-15-CE30-0006. Participating organisations named by the source: Laboratoire Charles Fabry; Institut d’Optique Graduate School. Funded amount: EUR 416,000, as stated by the source. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2021-02-15); national funding data, not CORDIS. Abstract given by the source: Statistical physics, a century-old theory, is probably one of the most powerful constructions of physics. It predicts that the equilibrium properties of any system composed of a large number of particles depend only on a handful of macroscopic parameters, no matter what the particles are and how they exactly interact with each other. But the question of how many-body systems relax towards such equilibrium states remains largely unsolved. This problem is especially acute for quantum systems, which evolve in a much larger configuration space than classical systems and obey fundamentally non-local equations of motion. Despite the formidable complexity of quantum dynamics, recent theoretical advances have put forward a remarkably simple picture: the dynamics of closed quantum many-body systems would be essentially local, meaning that it would always take a finite time for correlations between two distant regions of space to reach their equilibrium value. This form of locality would be an emergent property of the whole system, similar to spontaneous symmetry breaking, and have its origin in the propagation of quasi-particle excitations. The fact is, however, that only few observations to date directly confirm this scenario. In particular, the role played by the dimensionality of the system and the range of the inter-particle interaction is largely unknown. The concept of this project is to take advantage of the great versatility of ultra-cold atom systems to investigate experimentally the relaxation dynamics in regimes well beyond the boundaries of our current knowledge. We will focus our attention on two-dimensional systems in which the particles interact through both short- and long-range potentials, when all previous experiments were bound to one-dimensional systems. The realisation of the project will hinge on the construction of a new-generation quantum gas microscope experiment for strontium gases. Amongst the innovative experimental techniques that we will [shortened; the full text is on the OpenAIRE page]

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of French National Research Agency (ANR). Retrieved 2026-10-22. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The Q-DYN project, funded by the French National Research Agency with EUR 416,000, involves Laboratoire Charles Fabry and Institut d’Optique Graduate School. It focuses on the non-equilibrium dynamics of quantum many-body systems and their relaxation towards equilibrium states. Suggested technology pillar: simulation. Generated by AI from the public source text; it may contain errors and the original source is authoritative.