Descrizione del progetto
Spiegare le interazioni ultra-veloci, infinitamente piccole e altamente insolite
Tentare di spiegare i rapporti tra più oggetti che interagiscono sulla scala visibile, è relativamente semplice. Ad esempio, le interazioni tra il boccino e le altre palle (e la stecca e il tavolo) durante una partita a biliardo sono governate dalle classiche leggi della fisica. Se trasliamo questo discorso a un livello quantistico e alle interazioni tra molteplici e diverse particelle con fotoni, i fondamenti teorici sono in fase di elaborazione. I sistemi correlati agli elettroni, come quelli nei sistemi di materia condensata, stanno acquistando interesse sia sperimentalmente che teoricamente. Il progetto FASTCORR, finanziato dall’UE, intende fornire un fondamento teorico innovativo e metodi numerici che facilitino l’interpretazione di un quantitativo crescente di dati sperimentali relativi alle interazioni luce-materia, che riguardano materiali con elettroni correlati.
Obiettivo
Experimental activities at advanced photon sources, such as pulsed lasers, high harmonic generation facilities, and X-ray free electron lasers, generate results that challenge our understanding of light-matter interaction and ultrafast dynamics at the femtosecond and sub-femtosecond timescales. These results are particularly difficult to interpret for materials with correlated electrons, where a driving pulse can produce strong non-linear effects.
In FASTCORR, we answer this challenge with the development of a theory for driven quantum many-body systems that goes well beyond existing methods. This will be accomplished by developing dynamical mean-field theory and its generalizations, e.g. the dual fermion and dual boson theory, to cover out-of-equilibrium phenomena.
We aim to create a solid theoretical foundation on which we will build practical tools that allow to interpret and predict ultrafast time-resolved phenomena of correlated electron systems. This involves (i) the development of fundamental mathematical and physical concepts, (ii) software implementation, and (iii) numerical simulations that will be compared to experiments. Synergies between the three applicants are crucial to achieving the goals of this project.
FASTCORR will result in novel high-performance software that we will distribute freely. These computational tools will enable designed and targeted calculations for driven materials where the electronic structure is determined by strong correlation effects. The developed theory will be used hand in hand with world-leading experimental works in the field of pump-probe measurements and spectroscopy, e.g. as investigated at X-ray free-electron laser laboratories.
Campo scientifico
- natural sciencescomputer and information sciencessoftware
- natural sciencesphysical sciencestheoretical physicsparticle physicsfermions
- natural sciencesphysical sciencesopticslaser physicspulsed lasers
- natural sciencesphysical sciencestheoretical physicsparticle physicsphotons
- natural sciencesphysical sciencesopticsspectroscopy
Programma(i)
Argomento(i)
Meccanismo di finanziamento
ERC-SyG - Synergy grantIstituzione ospitante
751 05 Uppsala
Svezia