General Relativity and Cosmology: Unsolved Questions and Future Directions
For the last 100 years, General Relativity (GR) has taken over the gravitational theory mantle held by Newtonian Gravity for the previous 200 years. This article reviews the status of GR in terms of its self-consistency, completeness, and the evidence provided by observations, which have allowed GR...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-09-01
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| Series: | Universe |
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| Online Access: | http://www.mdpi.com/2218-1997/2/4/23 |
| _version_ | 1828276117156397056 |
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| author | Ivan Debono George F. Smoot |
| author_facet | Ivan Debono George F. Smoot |
| author_sort | Ivan Debono |
| collection | DOAJ |
| description | For the last 100 years, General Relativity (GR) has taken over the gravitational theory mantle held by Newtonian Gravity for the previous 200 years. This article reviews the status of GR in terms of its self-consistency, completeness, and the evidence provided by observations, which have allowed GR to remain the champion of gravitational theories against several other classes of competing theories. We pay particular attention to the role of GR and gravity in cosmology, one of the areas in which one gravity dominates and new phenomena and effects challenge the orthodoxy. We also review other areas where there are likely conflicts pointing to the need to replace or revise GR to represent correctly observations and consistent theoretical framework. Observations have long been key both to the theoretical liveliness and viability of GR. We conclude with a discussion of the likely developments over the next 100 years. |
| first_indexed | 2024-04-13T06:53:41Z |
| format | Article |
| id | doaj.art-f68500d1081a4700b7a8fe6bda342f74 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-04-13T06:53:41Z |
| publishDate | 2016-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-f68500d1081a4700b7a8fe6bda342f742022-12-22T02:57:20ZengMDPI AGUniverse2218-19972016-09-01242310.3390/universe2040023universe2040023General Relativity and Cosmology: Unsolved Questions and Future DirectionsIvan Debono0George F. Smoot1Paris Centre for Cosmological Physics, APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, CEA/lrfu, Observatoire de Paris, Sorbonne Paris Cité, 10, rue Alice Domon et Léonie Duquet, 75205 Paris CEDEX 13, FranceParis Centre for Cosmological Physics, APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, CEA/lrfu, Observatoire de Paris, Sorbonne Paris Cité, 10, rue Alice Domon et Léonie Duquet, 75205 Paris CEDEX 13, FranceFor the last 100 years, General Relativity (GR) has taken over the gravitational theory mantle held by Newtonian Gravity for the previous 200 years. This article reviews the status of GR in terms of its self-consistency, completeness, and the evidence provided by observations, which have allowed GR to remain the champion of gravitational theories against several other classes of competing theories. We pay particular attention to the role of GR and gravity in cosmology, one of the areas in which one gravity dominates and new phenomena and effects challenge the orthodoxy. We also review other areas where there are likely conflicts pointing to the need to replace or revise GR to represent correctly observations and consistent theoretical framework. Observations have long been key both to the theoretical liveliness and viability of GR. We conclude with a discussion of the likely developments over the next 100 years.http://www.mdpi.com/2218-1997/2/4/23General RelativitygravitationcosmologyConcordance Modeldark energydark matterinflationlarge-scale structure |
| spellingShingle | Ivan Debono George F. Smoot General Relativity and Cosmology: Unsolved Questions and Future Directions Universe General Relativity gravitation cosmology Concordance Model dark energy dark matter inflation large-scale structure |
| title | General Relativity and Cosmology: Unsolved Questions and Future Directions |
| title_full | General Relativity and Cosmology: Unsolved Questions and Future Directions |
| title_fullStr | General Relativity and Cosmology: Unsolved Questions and Future Directions |
| title_full_unstemmed | General Relativity and Cosmology: Unsolved Questions and Future Directions |
| title_short | General Relativity and Cosmology: Unsolved Questions and Future Directions |
| title_sort | general relativity and cosmology unsolved questions and future directions |
| topic | General Relativity gravitation cosmology Concordance Model dark energy dark matter inflation large-scale structure |
| url | http://www.mdpi.com/2218-1997/2/4/23 |
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