The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect
The interaction between Dark Matter and Dark Energy has been proposed as a mechanism to alleviate the coincidence problem. We analyze the effect of the interaction on the evolution of the gravitational field and propose two new observables based on its effect on the matter peculiar velocity field. W...
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ftdatacite:10.48550/arxiv.1308.1475 2023-05-15T18:22:48+02:00 The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect Xu, Xiao-Dong Wang, Bin Zhang, Pengjie Atrio-Barandela, Fernando 2013 https://dx.doi.org/10.48550/arxiv.1308.1475 https://arxiv.org/abs/1308.1475 unknown arXiv https://dx.doi.org/10.1088/1475-7516/2013/12/001 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Theory hep-th FOS Physical sciences article-journal Article ScholarlyArticle Text 2013 ftdatacite https://doi.org/10.48550/arxiv.1308.1475 https://doi.org/10.1088/1475-7516/2013/12/001 2022-04-01T13:18:05Z The interaction between Dark Matter and Dark Energy has been proposed as a mechanism to alleviate the coincidence problem. We analyze the effect of the interaction on the evolution of the gravitational field and propose two new observables based on its effect on the matter peculiar velocity field. We find that for different model parameters the matter peculiar velocity could be factor 2 times larger or 5 times smaller than the amplitude of velocity perturbations in the concordance LCDM cosmological model at the same scales. We compare the effect on the peculiar velocities with those on the Integrated Sachs-Wolfe effect and we show that velocities can potentially provide constraints on the strength of the interaction stronger than those currently available. We show that the current upper limits on the amplitude of the kinetic Sunyaev-Zel'dovich power spectrum provide constraints on the coupling within the dark sectors that are consistent with those obtained previously from the CMB and galaxy clusters. In particular, we show that current upper limits from the Atacama Cosmology Telescope and the South Pole Telescope favor Dark Energy decaying into Dark Matter, as required to solve the coincidence problem. : 23 pages, 7 figures, accepted for publication in JCAP Text South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
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Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Theory hep-th FOS Physical sciences |
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Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Theory hep-th FOS Physical sciences Xu, Xiao-Dong Wang, Bin Zhang, Pengjie Atrio-Barandela, Fernando The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect |
topic_facet |
Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Theory hep-th FOS Physical sciences |
description |
The interaction between Dark Matter and Dark Energy has been proposed as a mechanism to alleviate the coincidence problem. We analyze the effect of the interaction on the evolution of the gravitational field and propose two new observables based on its effect on the matter peculiar velocity field. We find that for different model parameters the matter peculiar velocity could be factor 2 times larger or 5 times smaller than the amplitude of velocity perturbations in the concordance LCDM cosmological model at the same scales. We compare the effect on the peculiar velocities with those on the Integrated Sachs-Wolfe effect and we show that velocities can potentially provide constraints on the strength of the interaction stronger than those currently available. We show that the current upper limits on the amplitude of the kinetic Sunyaev-Zel'dovich power spectrum provide constraints on the coupling within the dark sectors that are consistent with those obtained previously from the CMB and galaxy clusters. In particular, we show that current upper limits from the Atacama Cosmology Telescope and the South Pole Telescope favor Dark Energy decaying into Dark Matter, as required to solve the coincidence problem. : 23 pages, 7 figures, accepted for publication in JCAP |
format |
Text |
author |
Xu, Xiao-Dong Wang, Bin Zhang, Pengjie Atrio-Barandela, Fernando |
author_facet |
Xu, Xiao-Dong Wang, Bin Zhang, Pengjie Atrio-Barandela, Fernando |
author_sort |
Xu, Xiao-Dong |
title |
The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect |
title_short |
The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect |
title_full |
The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect |
title_fullStr |
The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect |
title_full_unstemmed |
The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect |
title_sort |
effect of dark matter and dark energy interactions on the peculiar velocity field and the kinetic sunyaev-zel'dovich effect |
publisher |
arXiv |
publishDate |
2013 |
url |
https://dx.doi.org/10.48550/arxiv.1308.1475 https://arxiv.org/abs/1308.1475 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1088/1475-7516/2013/12/001 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1308.1475 https://doi.org/10.1088/1475-7516/2013/12/001 |
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