2 papers
gr-qc2026
On energy and its positivity in spacetimes with an expanding flat de Sitter background
Rodrigo Avalos, Eric Ling, Annachiara Piubello
The positive energy theorems are a fundamental pillar in mathematical general relativity. Originally proved by Schoen-Yau and later Witten, these theorems were established for asym…
math-ph2025
On the discrete Dirac spectrum of general-relativistic hydrogenic ions with anomalous magnetic moment
Elie Kapengut, Michael K. -H. Kiessling, Eric Ling +1
The Reissner-Weyl-Nordström (RWN) spacetime of a point nucleus features a naked singularity for the empirically known nuclear charges and masses , w…