Matter non-conservation in the universe and dynamical dark energy

In an expanding universe, the vacuum energy density ρ Λ is expected to be a dynamical quantity. In quantum field theory in curved spacetime, ρ Λ should exhibit a slow evolution, determined by the expansion rate of the universe H. Recent measurements on the time variation of the fine-structure consta...

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Main Authors: Fritzsch, Harald., Solà, Joan.
Other Authors: Institute of Advanced Studies
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96888
http://hdl.handle.net/10220/13064
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-968882020-03-07T12:48:41Z Matter non-conservation in the universe and dynamical dark energy Fritzsch, Harald. Solà, Joan. Institute of Advanced Studies In an expanding universe, the vacuum energy density ρ Λ is expected to be a dynamical quantity. In quantum field theory in curved spacetime, ρ Λ should exhibit a slow evolution, determined by the expansion rate of the universe H. Recent measurements on the time variation of the fine-structure constant and of the proton-electron mass ratio suggest that the basic quantities of the standard model, such as the QCD scale parameter Λ QCD, may not be conserved in the course of the cosmological evolution. The masses of the nucleons m N and of the atomic nuclei would also be affected. Matter is not conserved in such a universe. These measurements can be interpreted as a leakage of matter into vacuum or vice versa. We point out that the amount of leakage necessary to explain the measured value of ṁN/mN could be of the same order of magnitude as the observationally allowed value of ṗΛ/ρΛ, with a possible contribution from the dark matter particles. The dark energy in our universe could be the dynamical vacuum energy in interaction with ordinary baryonic matter as well as with dark matter. 2013-08-06T06:23:18Z 2019-12-06T19:36:21Z 2013-08-06T06:23:18Z 2019-12-06T19:36:21Z 2012 2012 Journal Article Fritzsch, H.,& Solà, J. (2012). Matter non-conservation in the universe and dynamical dark energy. Classical and Quantum Gravity, 29(21). https://hdl.handle.net/10356/96888 http://hdl.handle.net/10220/13064 10.1088/0264-9381/29/21/215002 en Classical and quantum gravity
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description In an expanding universe, the vacuum energy density ρ Λ is expected to be a dynamical quantity. In quantum field theory in curved spacetime, ρ Λ should exhibit a slow evolution, determined by the expansion rate of the universe H. Recent measurements on the time variation of the fine-structure constant and of the proton-electron mass ratio suggest that the basic quantities of the standard model, such as the QCD scale parameter Λ QCD, may not be conserved in the course of the cosmological evolution. The masses of the nucleons m N and of the atomic nuclei would also be affected. Matter is not conserved in such a universe. These measurements can be interpreted as a leakage of matter into vacuum or vice versa. We point out that the amount of leakage necessary to explain the measured value of ṁN/mN could be of the same order of magnitude as the observationally allowed value of ṗΛ/ρΛ, with a possible contribution from the dark matter particles. The dark energy in our universe could be the dynamical vacuum energy in interaction with ordinary baryonic matter as well as with dark matter.
author2 Institute of Advanced Studies
author_facet Institute of Advanced Studies
Fritzsch, Harald.
Solà, Joan.
format Article
author Fritzsch, Harald.
Solà, Joan.
spellingShingle Fritzsch, Harald.
Solà, Joan.
Matter non-conservation in the universe and dynamical dark energy
author_sort Fritzsch, Harald.
title Matter non-conservation in the universe and dynamical dark energy
title_short Matter non-conservation in the universe and dynamical dark energy
title_full Matter non-conservation in the universe and dynamical dark energy
title_fullStr Matter non-conservation in the universe and dynamical dark energy
title_full_unstemmed Matter non-conservation in the universe and dynamical dark energy
title_sort matter non-conservation in the universe and dynamical dark energy
publishDate 2013
url https://hdl.handle.net/10356/96888
http://hdl.handle.net/10220/13064
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