White Holes are Christmas Magic

Abstract

In classical General Relativity, White Holes (WH) refer to the time reverse Schwarzschild (SW) Black Hole (BH) solution of a point mass $M$ and gravitational radius $r_S=2GM$. The SW metric is static so that a time reverse WH solution simply corresponds to a violation of causality. The WH solution does not make any physical sense here. For a more physical model, such as the Lemaitre-Tolman-Bondi (LTB) metric with finite mass inside $r_S$, we show that both the expanding and collapsing solutions correspond to a BH and not to a WH.

On the Interpretation of Cosmic Acceleration

“…Additionally, we can conjecture from this notion that the interior dynamics of any other Schwarzschild BH could also be interpreted as having a similar Λ surface term r Λ = r S = 2GM for expanding interior BH solutions. The Λ term thus becomes the mechanism that effectively prevents anything from escaping the BH interior (see [20]).…”