161 citations · 685 across the 15 of their papers we have counts for
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gr-qc2011★ 15 cited
Relativistic Wavepackets in Classically Chaotic Quantum Cosmological Billiards
Michael Koehn
Close to a spacelike singularity, pure gravity and supergravity in four to eleven spacetime dimensions admit a cosmological billiard description based on hyperbolic Kac-Moody group…
math.RT2011★ 6 cited
On fundamental domains and volumes of hyperbolic Coxeter-Weyl groups
Philipp Fleig, Michael Koehn, Hermann Nicolai
We present a simple method for determining the shape of fundamental domains of generalized modular groups related to Weyl groups of hyperbolic Kac-Moody algebras. These domains are…