Spacetime Foam and the Casimir Energy

TL;DR

This paper explores how quantum fluctuations of gravity, akin to Casimir energy, may be linked to black hole pair production and the foam-like structure of spacetime, with implications for the cosmological constant.

Contribution

It proposes a novel connection between black hole pair creation, spacetime foam, and Casimir-like energy in pure gravity.

Findings

Black hole pair production may be driven by vacuum fluctuations.

Spacetime may have a foam-like quantum structure.

Implications for the cosmological constant are discussed.

Abstract

We conjecture that the neutral black hole pair production is related to the vacuum fluctuation of pure gravity via the Casimir-like energy. A generalization of this process to a multi-black hole pair is considered. Implications on the foam-like structure of spacetime and on the cosmological constant are discussed.