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gr-qc2026
A unified framework for photon and massive particle hypersurfaces in stationary spacetimes
Erasmo Caponio, Anna Valeria Germinario, Anna valeria Germinario +1
Massive particle surfaces (MPS), introduced by Kobialko, Bogush and Gal'tsov, are timelike hypersurfaces confining the trajectories of charged massive particles with fixed Killing…
gr-qc2025★ 2 cited
Lorentzian-Euclidean black holes and Lorentzian to Riemannian metric transitions
Rossella Bartolo, Erasmo Caponio, Anna Valeria Germinario +1
In recent papers on spacetimes with a signature-changing metric, the concept of a Lorentzian-Euclidean black hole and new elements for Lorentzian-Riemannian signature change have b…