Understanding and optimizing triplet exciton transfer at organic-inorganic interfaces: Microscopic calculations
Photovoltaics play an important role for the provision of clean and renewable energy. Presently, silicon solar cells dominate the market. However, they have a serious efficiency limitation: The photon energy in excess of the silicon band gap is transformed into unwanted heat. Singlet exciton fission, in which two triplet excitons are generated from ...
Duration: 01/2023 - 12/2027
Funded by: DFG
Physics of periodic and quasi-periodic polariton systems
Light-matter interaction has attracted a great deal of attention in modern physics and material sciences. Many unique and unconventional properties have been reported on the journey to the efficient control of light (or photons). A light-matter coupled state of particular current interest is the exciton-polariton, a quasiparticle composed of a ...
Duration: 01/2023 - 12/2026
Funded by: DFG
TRR 358 - Spectral theory in higher rank and infinite volume (B02)
Spectral theory is a fundamental tool for the investigation of locally symmetric spaces which, in the classical context, usually have finite volume. Already for spaces real rank one, say quotients of the upper half plane by a discrete group of infinite covolume, very interesting and characteristic spectral phenomena happen. The case of higher rank ...
Duration: 01/2023 - 12/2026
Funded by: DFG
TRR 358 - Geodesic flows and Weyl chamber flows on affine buildings (B04)
Affine buildings and their quotients are geometric objects which come along with interesting dynamical systems. This project studies geodesic flows and Weyl chamber flows on such buildings. More precisely, the project aims to develop a spectral theory of joint Ruelle-Taylor resonances for the Weyl chamber flows and study equidistribution properties ...
Duration: 01/2023 - 12/2026
Funded by: DFG
Near-field coupled nonlocal optical metasurface for versatile polarization and bandstructure manipulations
Recent advances in the modern nanotechnology gave birth to ‘thin-flat-optics’ elements (the so-called optical metasurfaces), based on nanoscale structures, capable of versatile tailoring on the responses to light such as wave-fronts, amplitudes, polarization, and frequency. Despite the extremely reduced dimensions of the ‘flat-optics’ elements, the ...
Duration: 01/2023 - 12/2026
Funded by: DFG
CREXDATA: Critical Action Planning over Extreme-Scale Data
Project visionCREXDATA's vision is to develop a data platform for real-time critical situation management. This should also enable flexible action planning and agile decision making on data of extreme size and complexity. Within CREXDATA, algorithms, software architectures, and tools are being developed for networked predictive analytics and ...
Duration: 01/2023 - 12/2025
Funded by: EU
Contact: Dr.-Ing. Jens Pottebaum
TRR 358 - Affine Kac–Moody groups: algebra, analysis and arithmetic (Subprojct A05)
Affine Kac-Moody groups and related groups (like loop groups) will be studied from several perspectives. We shall investigate finiteness properties of special linear groups over Laurent polynomials over the ring of integers. We also strive to classify certain maximal Lie orders corresponding to trigonometric solutions of the classical Yang-Baxter ...
Duration: 01/2023 - 12/2026
Funded by: DFG
TRR 358 - Hereditary categories, reflection groups and non-commutative curves (Subproject C02)
There are deep connections between quiver representations and Coxeter groups involving the associated root systems, Lie algebras and quantum groups. We will study a parallel situation in which coherent sheaves on certain non-commutative curves, called exceptional curves, correspond to other types of reflection groups. Such exceptional curves ...
Duration: 01/2023 - 12/2026
Funded by: DFG
TRR 358 - Tame patterns in the representation theory of reductive groups and arithmetic geometry (Subproject C03)
One says that an associative algebra has tame representation type if a complete classification of its indecomposable representations is possible, at least in principle. For example the classification of Harish-Chandra modules for the group SL(2,R) was reduced by Gelfand to such an algebra. We shall study algebras arising from more general reductive ...
Duration: 01/2023 - 12/2026
Funded by: DFG
The Effect of Spatial Correlation on Liquid Phase Vibrational Spectra
Within this project, the influence of spatial correlation on the vibrational spectra (infrared, Raman, VCD, ROA) of condensed phase systems shall be investigated. It is well known in the literature that spatial correlation plays a significant role for the signal intensity in vibrational spectroscopy, but there does not yet exist a generally ...
Duration: 01/2023 - 12/2026
Funded by: DFG