What if gravity becomes really repulsive in the future?
Abstract 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 po...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-5728-x |
| _version_ | 1818839067296530432 |
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| author | Imanol Albarran Mariam Bouhmadi-López João Morais |
| author_facet | Imanol Albarran Mariam Bouhmadi-López João Morais |
| author_sort | Imanol Albarran |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-12-19T03:48:24Z |
| format | Article |
| id | doaj.art-866a5d1ee5614e19804763eb7d89fb23 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-19T03:48:24Z |
| publishDate | 2018-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-866a5d1ee5614e19804763eb7d89fb232022-12-21T20:37:03ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-03-017831710.1140/epjc/s10052-018-5728-xWhat if gravity becomes really repulsive in the future?Imanol Albarran0Mariam Bouhmadi-López1João Morais2Departamento de Física, Universidade da Beira InteriorDepartment of Theoretical Physics, University of the Basque Country UPV/EHUDepartment of Theoretical Physics, University of the Basque Country UPV/EHUAbstract 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.http://link.springer.com/article/10.1140/epjc/s10052-018-5728-x |
| spellingShingle | Imanol Albarran Mariam Bouhmadi-López João Morais What if gravity becomes really repulsive in the future? European Physical Journal C: Particles and Fields |
| 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 |
| url | http://link.springer.com/article/10.1140/epjc/s10052-018-5728-x |
| work_keys_str_mv | AT imanolalbarran whatifgravitybecomesreallyrepulsiveinthefuture AT mariambouhmadilopez whatifgravitybecomesreallyrepulsiveinthefuture AT joaomorais whatifgravitybecomesreallyrepulsiveinthefuture |