3 papers
gr-qc2026
Learning When Black Hole Hair Is Observable: Physical Identifiability, Generalization, and Observable Complementarity
Ariadna Uxue Palomino Ylla
High interpolation accuracy does not establish that physical parameters are identifiable. We study this distinction in a controlled Kiselev black hole benchmark with a validated ti…
gr-qc2026
Shortest-Path Multiplicity Heterogeneity as a Graph Diagnostic for Radial Organization in Sampled Geometries
Ariadna Uxue Palomino Ylla
Shortest-path counts describe how many minimal routes connect a pair of graph vertices, complementing distance alone. We study their heterogeneity within graph-distance shells usin…
gr-qc2025
Test particle motion around a black hole dressed with a spherically symmetric stationary fluid
Ariadna Uxue Palomino Ylla, Yasutaka Koga, Chul-Moon Yoo
We investigate the motion of a massive particle around a spherically symmetric black hole surrounded by a stationary and radial inflow of perfect fluid. The background spacetime is…