dorsal/arxiv
View SchemaThe Expansion of the Universe and the Cosmological Constant Problem
| Authors | R. F. O'Connell |
|---|---|
| Categories | |
| ArXiv ID | physics/0703191 |
| URL | https://arxiv.org/abs/physics/0703191 |
| DOI | 10.1016/j.physleta.2007.02.006 |
| Journal | Phys.Lett.A366:177-178,2007 |
Abstract
The discovery that the expansion of the universe is accelerating in time is a major discovery which still awaits adequate explanation. It is generally agreed that this implies a cosmic repulsion as a result of the existence of a cosmological constant . However, estimates of the cosmological constant, based on calculations of the zero-point fluctuations of quantum fields are too large by over a hundred orders of magnitude. This result is obtained by summing the zero-point energies up to a large cutoff energy, based on the Planck scale. Since there is no compelling reason for this choice, we argue that since all known quantum electrodynamic (QED) effects involves interaction with matter, a preferred choice should be based on causality and other considerations, leading to a much lower value for the cosmological constant .
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"abstract": "The discovery that the expansion of the universe is accelerating in time is a\nmajor discovery which still awaits adequate explanation. It is generally agreed\nthat this implies a cosmic repulsion as a result of the existence of a\ncosmological constant . However, estimates of the cosmological constant, based\non calculations of the zero-point fluctuations of quantum fields are too large\nby over a hundred orders of magnitude. This result is obtained by summing the\nzero-point energies up to a large cutoff energy, based on the Planck scale.\nSince there is no compelling reason for this choice, we argue that since all\nknown quantum electrodynamic (QED) effects involves interaction with matter, a\npreferred choice should be based on causality and other considerations, leading\nto a much lower value for the cosmological constant .",
"arxiv_id": "physics/0703191",
"authors": [
"R. F. O\u0027Connell"
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"doi": "10.1016/j.physleta.2007.02.006",
"journal_ref": "Phys.Lett.A366:177-178,2007",
"title": "The Expansion of the Universe and the Cosmological Constant Problem",
"url": "https://arxiv.org/abs/physics/0703191"
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