Wormholes, a fluctuating cosmological constant and the Coleman mechanism
High Energy Physics - Theory
2021-02-24 v1 General Relativity and Quantum Cosmology
Abstract
We show that in a two-dimensional model of quantum gravity the summation over all possible wormhole configurations leads to a kind of Coleman mechanism where the cosmological constant plays no role for large universes. Observers who are unable to observe the change in topology will naturally interpret the measurements of the size of the universe as being caused by a fluctuating cosmological constant, rather than fluctuating topology of spacetime.
Cite
@article{arxiv.2101.00478,
title = {Wormholes, a fluctuating cosmological constant and the Coleman mechanism},
author = {Jan Ambjorn and Yuki Sato and Yoshiyuki Watabiki},
journal= {arXiv preprint arXiv:2101.00478},
year = {2021}
}
Comments
11 pages, 2 figures