Welcome to SPP 2026
This is the platform of a coordinated research programme in mathematics, funded by the German Research Foundation (DFG). It comprises 80 research projects in the fields of differential geometry, geometric topology, and global analysis. More than 80 researchers from doctoral to professorial level and based at more than 20 German and Swiss universities are represented in this programme.
Latest publications
Locally homogeneous Axiom A flows II: geometric structures for Anosov subgroups
Benjamin Delarue, Daniel Monclair, Andrew Sanders
Given a non-compact semisimple real Lie group G and an Anosov subgroup Γ, we utilize the correspondence between ℝ-valued additive characters on Levi…
Spectra of Lorentzian quasi-Fuchsian manifolds
Benjamin Delarue, Colin Guillarmou, Daniel Monclair
A three-dimensional quasi-Fuchsian Lorentzian manifold M is a globally hyperbolic spacetime diffeomorphic to Σ×(−1,1) for a closed orientable surface…
The Relative Fermionic Entropy in Two-Dimensional Rindler Spacetime
Felix Finster, Albert Much
The fermionic relative entropy in two-dimensional Rindler spacetime is studied using both modular theory and the reduced one-particle density…
Notions of Fermionic Entropies for Causal Fermion Systems
Felix Finster, Robert H. Jonsson, Magdalena Lottner, Albert Much, Simone Murro
The fermionic von Neumann entropy, the fermionic entanglement entropy and the fermionic relative entropy are defined for causal fermion systems. Our…