Timing many-body processes in small quantum systems

Project funded by Swedish Research Council (Project grant), grant 2020-03315_VR. Participating organisations named by the source: Stockholm University. Funded amount: SEK 3,280,000, as stated by the source. Runs 2021-01-01 to 2024-12-31. Keywords: Naturvetenskap, Natural Sciences, Fysik, Physical Sciences, Atom- och molekylfysik och optik, Atom and Molecular Physics and Optics. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-12-05); national funding data, not CORDIS. Abstract given by the source: The rapid light-source development is advancing on several frontiers. One is the quest for ever shorter light-pulses. Attosecond light-bursts enable experiments that follow the dynamics of the electrons. Here time-resolved photoionization experiments have already revealed previously unattainable electron escape times and the possibilities to clock quantum mechanical processes is booming. The key is to get hold of both phase and amplitude of the time-dependent electronic wave-packets. We build theoretical and computational tools for the interpretation and quantitative description of experimental observations with attosecond light sources, in close contact with experimental groups. Our aim is to study the zoo of screening and relaxation events that are initiated when electrons are ionized from deeper energy levels. Important questions are the duration of different processes, the relative time when secondary electrons appear in the continuum, its dependence on the coherence of the particles, and the reality of time-order in quantum mechanical systems.Another frontier concerns intensity. A number of current projects strive for extreme light fields. Their realization will lead to a novel importance of magnetic interactions, and to electrons driven to relativistic velocities. The need for relativistic time-domain calculations is obvious. We develop reliable and efficient methods to solve the full-dimensional time-dependent Dirac equation for atoms exposed to extreme fields.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Swedish Research Council. 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 project "Timing many-body processes in small quantum systems" is funded by the Swedish Research Council with a grant of SEK 3,280,000, running from January 1, 2021, to December 31, 2024, involving Stockholm University. Suggested technology pillar: simulation. Generated by AI from the public source text; it may contain errors and the original source is authoritative.