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What if gravity becomes really repulsive in the future?

The current acceleration of the Universe is one of the most puzzling issues in theoretical physics nowadays. We are far from giving an answer in this letter to the question of its nature. Yet, with the observations we have at hand, we analyse the different patterns that the gravitational potential c...

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Detalles Bibliográficos
Autores principales: Albarran, Imanol, Bouhmadi-López, Mariam, Morais, João
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5866847/
https://www.ncbi.nlm.nih.gov/pubmed/29599645
http://dx.doi.org/10.1140/epjc/s10052-018-5728-x
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author Albarran, Imanol
Bouhmadi-López, Mariam
Morais, João
author_facet Albarran, Imanol
Bouhmadi-López, Mariam
Morais, João
author_sort Albarran, Imanol
collection PubMed
description The current acceleration of the Universe is one of the most puzzling issues in theoretical physics nowadays. We are far from giving an answer in this letter to the question of its nature. Yet, with the observations we have at hand, we analyse the different patterns that the gravitational potential can show in the future. Surprisingly, gravity not only can get weaker in the near future, it can even become repulsive; or equivalently, the gravitational potential may become negative. We show this remark by using one of the simplest phenomenological model we can imagine for dark energy. We have also reviewed the statefinder approach of these models. For completeness, we have also showed the behaviour of the density contrast of dark matter and dark energy for these simple (yet illustrative models). Our results are displayed and we see how they shall evolve in the future.
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spelling pubmed-58668472018-03-27 What if gravity becomes really repulsive in the future? Albarran, Imanol Bouhmadi-López, Mariam Morais, João Eur Phys J C Part Fields Regular Article - Theoretical Physics The current acceleration of the Universe is one of the most puzzling issues in theoretical physics nowadays. We are far from giving an answer in this letter to the question of its nature. Yet, with the observations we have at hand, we analyse the different patterns that the gravitational potential can show in the future. Surprisingly, gravity not only can get weaker in the near future, it can even become repulsive; or equivalently, the gravitational potential may become negative. We show this remark by using one of the simplest phenomenological model we can imagine for dark energy. We have also reviewed the statefinder approach of these models. For completeness, we have also showed the behaviour of the density contrast of dark matter and dark energy for these simple (yet illustrative models). Our results are displayed and we see how they shall evolve in the future. Springer Berlin Heidelberg 2018-03-24 2018 /pmc/articles/PMC5866847/ /pubmed/29599645 http://dx.doi.org/10.1140/epjc/s10052-018-5728-x Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3
spellingShingle Regular Article - Theoretical Physics
Albarran, Imanol
Bouhmadi-López, Mariam
Morais, João
What if gravity becomes really repulsive in the future?
title What if gravity becomes really repulsive in the future?
title_full What if gravity becomes really repulsive in the future?
title_fullStr What if gravity becomes really repulsive in the future?
title_full_unstemmed What if gravity becomes really repulsive in the future?
title_short What if gravity becomes really repulsive in the future?
title_sort what if gravity becomes really repulsive in the future?
topic Regular Article - Theoretical Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5866847/
https://www.ncbi.nlm.nih.gov/pubmed/29599645
http://dx.doi.org/10.1140/epjc/s10052-018-5728-x
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