The matter-antimatter interpretation of Kerr spacetime
Abstract
Repulsive gravity is not very popular in physics. However, one comes across it in at least two main occurrences in general relativity: in the negative- region of Kerr spacetime, and as the result of the gravitational interaction between matter and antimatter, when the latter is assumed to be CPT-transformed matter. Here we show how these two independent developments of general relativity are perfectly consistent in predicting gravitational repulsion and how the above Kerr negative- region can be interpreted as the habitat of antimatter. As a consequence, matter particles traveling along vortical geodesics can pass through the throat of a rotating black hole and emerge as antimatter particles (and vice versa). An experimental definitive answer on the gravitational behavior of antimatter is awaited in the next few years.
Keywords
Cite
@article{arxiv.1403.4820,
title = {The matter-antimatter interpretation of Kerr spacetime},
author = {M. Villata},
journal= {arXiv preprint arXiv:1403.4820},
year = {2015}
}
Comments
8 pages, 1 figure. Reference [28] added. This is the pre-peer reviewed version of the article accepted for publication in Annalen der Physik