3 papers
hep-th2026
3D Einstein action from 6D Kodaira-Spencer gravity
Johanna Erdmenger, Jonathan Karl, Jani Kastikainen +1
In view of embedding 3D gravity into topological string theory, we show that the dimensional reduction of 6D Kodaira-Spencer gravity on , i.e. the low-energ…
hep-th2025
Topological Einstein gravity as Kodaira-Spencer gravity
Johanna Erdmenger, Jonathan Karl, Jani Kastikainen +3
As a contribution towards quantizing three-dimensional gravity, we show at the classical level that Euclidean three-dimensional Einstein gravity with a negative cosmological consta…
hep-th2025
Modular theory and symmetry resolution in hyperfinite von Neumann algebras
Giuseppe Di Giulio, Moritz Dorband, Johanna Erdmenger +1
We study modular theory in hyperfinite von Neumann algebras, i.e. in those of type II or type III, from the viewpoint of a subregion charge sector decomposition. We address this sy…