Projects / Programmes
Non-equilibrium dynamics of interacting electron systems
| Code |
Science |
Field |
Subfield |
| 1.02.02 |
Natural sciences and mathematics |
Physics |
Theoretical physics |
| Code |
Science |
Field |
| P260 |
Natural sciences and mathematics |
Condensed matter: electronic structure, electrical, magnetic and optical properties, supraconductors, magnetic resonance, relaxation, spectroscopy |
| Code |
Science |
Field |
| 1.03 |
Natural Sciences |
Physical sciences |
Solid state theory, correlated electrons, novel materials, numerical methods, transport properties, nonequilibrium properties
Researchers (12)
Organisations (2)
Abstract
The project is devoted to the theory of nonequilibrium and real - time dynamics of strongly correlated electrons in solid materials. Since the subject came into focus of intensive research only recently, there is number of fundamental theoretical issues which have to be addressed, in connection with the search for novel numerical and analytical approaches to these problems. Several questions will be investigated within the project. The nonlinear and even linear response to external field and driving of Mott- Hubbard insulator state are so far controversial and will be investigated, starting both from finite-temperature equilibrium and from the ground state, respectively. Relevant models in this respect are models of interacting spinless fermions and the Hubbard model, in one dimensional geometry and higher dimensions. Another class of open problems concerns the driving and nonlinear mobility as well as real-time response and dynamics of single charge carriers coupled strongly with the background, either magnetic one in Mott insulators and antiferromagnets, or to lattice vibrations in electron-phonon systems. Relevant to experiments on spin-chain materials and their application to magnetic-mode cooling are nonlinear properties of nearly dissipationless thermal conductivity via magnetic excitations. Related to all issues in nonequilibrium dynamics is the open problem of the approach to equilibrium or thermalization where the role of conserved quantities, driving field and dimension will be considered.
Significance for science
The research of nonequilibrium and transient phenomena in solid state materials as well of analogous systems, where a particular attention in recent years are ultracold atoms in optical lattices, in in the last decade within the focus of experimental and theoretical efforts in condensed matter physics. This is partially the consequence of rapid advance in experimental methods, as the ultrafast optical laser spectroscopy, time-resolved angular photoemission, sophisticated treatments of cold atoms systems etc. Besides that materials with strongly correlated electrons are of particular interest because the time dependent and transient phenomena in these systems are extremely fast and due to these properties of potential interest for future applications. Our results within the finished project are well in the direction of international efforts and achievements, and had already a very visible echo in the the scientific community. Results on the dielectric breakdown in Mott isulators, ultrafast charge recombination in excited Mott isulators, on anomalous linear response and relaxation in integrable systems of correlated electrons have been published in most respected international scientific journals and have been presented on several conferences as invited talks.
Significance for the country
Successful research and project in this active field of solid state physics and material science opened great opportunities for the exchange of scientists, in particular younger ones, into EU and world-wide collaborations with prestigious scientific institutions and individuals. The subject of the project is closely related to a Ph.D. dissertaion which will be defended in few months and the candidate hase been already offered several prestiguous postdoc positions on the basis of her results and papers published so far. The presented theoretical project has already led to increased collaboration with domestic Slovenian experimental group working on ultrafast spectroscopy in solid materials. Achievements of the project also present a greater potential for application of EU projects and their approval. Novel results with high impact in this research area also result in higher visibility of physics and science in Slovenia, becoming more attractive place for foreign students and researchers.
Most important scientific results
Annual report
2011,
2012,
2013,
final report,
complete report on dLib.si
Most important socioeconomically and culturally relevant results
Annual report
2011,
2012,
2013,
final report,
complete report on dLib.si
