2025/07/23 by Alberto Castellano, Castellano, Alberto, Carmine Montella +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2507.17857
openalex publication_date 2025/07/23 · openalex created_date 2025/10/16 · openalex updated_date 2026/08/01
We extend the κ-symmetry analysis of supersymmetric D-brane probes in the AdS2 × S2 attractor geometry, originally performed by Simons, Strominger, Thompson, and Yin, to also include stationary -- but non-static -- worldlines carrying angular momentum along the 2-sphere. We demonstrate that certain special trajectories, with fixed radius and orbital velocity, solve the equations of motion and moreover satisfy a supersymmetry preserving condition, thus defining new \frac12-BPS configurations. Furthermore, these classical paths are shown to saturate a lower bound for the Hamiltonian generating global time translations, with the corresponding minimal energy depending on a generalized angular momentum vector \boldsymbolJ. The direction of the latter, in turn, determines exactly which supercharges remain unbroken. Our results reveal a richer spectrum of (multi-particle) supersymmetric states in AdS2 × S2, which can be organized into distinct selection sectors labeled by the conserved SU(2) charges. This construction has direct applications in black hole microstate counting, the analysis of probe dynamics and AdS2/CFT1 holography.