3 papers
hep-th2026
Mimetic Dark Matter from Inflation
Ali H. Chamseddine, Viatcheslav Mukhanov
We investigate the coupling of mimetic dark matter to the Gauss-Bonnet topological term in addition to the Einstein-Hilbert action. We demonstrate that such interactions can natura…
hep-th2025
Hearing the Shape of the Universe: A Personal Journey in Noncommutative Geometry
Ali H. Chamseddine
This article surveys the noncommutative-geometric (NCG) approach to fundamental physics, in which geometry is encoded spectrally by a generalized Dirac operator and where dynamics…
gr-qc2025
On the Dark-Energy Enigma
Ali H. Chamseddine, Jürg Fröhlich
We present a model that offers an explanation for the presence of (Dark Matter and) Dark Energy in the universe. A key idea is to express the volume form of the Lorentzian metric o…