Comments on the cosmological constant in generalized uncertainty models
Abstract
The existence of a small, non-zero cosmological constant is one of the major puzzles in fundamental physics. Naively, quantum field theory arguments would imply a cosmological constant which is up to 10 times larger than the observed one. It is believed a comprehensive theory of quantum gravity would resolve this enormous mismatch between theory and observation. In this work, we study the ability of generalized uncertainty principle (GUP) models, which are phenomenologically motivated models of quantum gravity, to address the cosmological constant problem. In particular, we focus on how these GUP models may change the phase space of QFT, and how this affects the momentum space integration of the zero-point energies of normal modes of fields. We point out several issues that make it unlikely that GUP models, in their current form, would be able to adequately address the cosmological constant problem.
Cite
@article{arxiv.2209.03172,
title = {Comments on the cosmological constant in generalized uncertainty models},
author = {Michael Bishop and Joey Contreras and Peter Martin and Douglas Singleton},
journal= {arXiv preprint arXiv:2209.03172},
year = {2022}
}
Comments
10 pages, revtex, no figures. Published in Frontiers in Astronomy and Space Science. This article is part of the Research Topic "Generalized Uncertainty Relations: Existing Paradigms and New Approaches" edited by Dr. Matthew Lake