2017/02/28 by Fabrizio Tamburini, Mariafelicia De Laurentis, Ignazio Licata +2 · 13 citations
Physics and Astronomy · #Angular momentum #Black hole (networking) #Classical mechanics #Dipole #Event (particle physics) #Event horizon #Experimental and Theoretical Physics Studies #Extra dimensions #Field (mathematics) #Gravitation #Mechanics #Orbital Angular Momentum in Optics #Photon #Physics #Quantum Electrodynamics and Casimir Effect #Quantum electrodynamics #Quantum mechanics #Vortex #Vorticity #gr-qc #quant-ph
paper · pdf · doi:10.3390/e19090458
published in Entropy 19(9), 458 (Multidisciplinary Digital Publishing Institute) · 6 pages 2 figures
arxiv created 2017/05/11 · openalex publication_date 2017/08/31 · arxiv updated 2017/10/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Background: The Hawking–Perry–Strominger (HPS) work states a new controversial idea about the black hole (BH) information paradox , where BHs maximally entropize and encode information in their event horizon area , with no “hair” thought to reveal information outside but angular momentum, mass, and electric charge only in a unique quantum gravity (QG) vacuum state. New conservation laws of gravitation and electromagnetism , appear to generate different QG vacua, preserving more information in soft photon/graviton hair implants. We find that BH photon hair implants can encode orbital angular momentum (OAM) and vorticity of the electromagnetic (EM) field. Methods: Numerical simulations are used to plot an EM field with OAM emitted by a set of dipolar currents together with the soft photon field they induce. The analytical results confirm that the soft photon hair implant carries OAM and vorticity. Results: a set of charges and currents generating real EM fields with precise values of OAM induce a “curly”, twisted, soft-hair implant on the BH with vorticity and OAM increased by one unit with respect to the initial real field. Conclusions: Soft photon implants can be spatially shaped ad hoc, encoding structured and densely organized information on the event horizon.