Black Holes and Expanding Universes as Observer-Dependent Descriptions of the Same Geometry : A Proposal for Pure Geometric Duality
Abstract
A proposal for geometric duality between black hole interiors and expanding cosmologies. Argues that event horizons create observer-complementary descriptions where "black hole" and "universe" are names for the same geometry viewed from opposite sides of a causal boundary. Based on signature flip at horizons, Kantowski-Sachs geometry, and horizon thermodynamics. 1+1=1.
Fields of Study & Subjects
Black Holes and Theoretical Physics
Cosmology and Gravitation Theories
Relativity and Gravitational Theory
Publication details
- Journal / source
- Zenodo (CERN European Organization for Nuclear Research)
- Publication date
- 15 January 2026
- Language
- EN