2014/09/11 by S. Kalyana Rama, Rama, S. Kalyana
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 Electrodynamics and Casimir Effect #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.SR #gr-qc #hep-th
paper · pdf · doi:10.48550/arxiv.1409.3462
Version 2: Reference added. 21 pages
openalex publication_date 2014/09/11 · arxiv created 2014/10/02 · arxiv updated 2014/10/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A massive compact object is that which forms when a sufficiently massive star collapses. This is commonly taken to be a black hole with a singularity surrounded by a horizon and which evolves by emitting Hawking radiation. In a quantum theory of gravity, singularities are expected to be resolved and the evolutions are expected to be unitary. Assuming that such a theory with these properties exists, and with a few more physically motivated assumptions, we argue that a massive compact object has no singularity (by assumption) and must also have no horizon; otherwise, there may be a loss of predictability in the case of a black hole candidate observed today. With no singularity and also with no horizon, the massive compact object will then evolve as a standard quantum system with large number of interacting degrees of freedom.