2 papers
math.SP2019
Asymptotic Lattices, Good Labellings, and the Rotation Number for Quantum Integrable Systems
Monique Dauge, Michael A. Hall, San Vu Ngoc
This article introduces the notion of good labellings for asymptotic lattices in order to study joint spectra of quantum integrable systems from the point of view of inverse spectr…
math.AP2018
Ergoregions between two ergospheres
Gregory Eskin, Michael Hall
For a stationary spacetime metric, black holes are spatial regions which disturbances may not propagate out of. In our previous work an existence and regularity theorem was proven…