Gravitational waves in Brans–Dicke theory with a cosmological constant
Abstract Weak field gravitational wave solutions are investigated in Brans–Dicke (BD) theory in the presence of a cosmological constant. In this setting the background geometry is not flat but asymptotically de-Sitter. We investigate the linearised field equations, and their gravitational wave solut...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-04-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09123-7 |
| _version_ | 1818339056788963328 |
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| author | Hatice Özer Özgür Delice |
| author_facet | Hatice Özer Özgür Delice |
| author_sort | Hatice Özer |
| collection | DOAJ |
| description | Abstract Weak field gravitational wave solutions are investigated in Brans–Dicke (BD) theory in the presence of a cosmological constant. In this setting the background geometry is not flat but asymptotically de-Sitter. We investigate the linearised field equations, and their gravitational wave solutions in a certain gauge choice. We will show that this theory leads to massless scalar waves as in original BD theory and in contrast to massive BD theory. The effects of these waves on free particles and their polarization properties are studied extensively and effects of the cosmological constant is analyzed in these phenomena in detail. The energy flux of these waves are also discussed in this background. By analyzing this flux, we obtain a critical distance where the waves cannot propagate further, which extends Cosmic no Hair Conjecture (CNC) to BD theory with a cosmological constant. |
| first_indexed | 2024-12-13T15:20:56Z |
| format | Article |
| id | doaj.art-fa8cea3dbe894fa994983238061b2cc8 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-13T15:20:56Z |
| publishDate | 2021-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-fa8cea3dbe894fa994983238061b2cc82022-12-21T23:40:34ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-04-0181411410.1140/epjc/s10052-021-09123-7Gravitational waves in Brans–Dicke theory with a cosmological constantHatice Özer0Özgür Delice1Department of Physics, Faculty of Sciences, Istanbul UniversityDepartment of Physics, Faculty of Arts and Sciences, Marmara UniversityAbstract Weak field gravitational wave solutions are investigated in Brans–Dicke (BD) theory in the presence of a cosmological constant. In this setting the background geometry is not flat but asymptotically de-Sitter. We investigate the linearised field equations, and their gravitational wave solutions in a certain gauge choice. We will show that this theory leads to massless scalar waves as in original BD theory and in contrast to massive BD theory. The effects of these waves on free particles and their polarization properties are studied extensively and effects of the cosmological constant is analyzed in these phenomena in detail. The energy flux of these waves are also discussed in this background. By analyzing this flux, we obtain a critical distance where the waves cannot propagate further, which extends Cosmic no Hair Conjecture (CNC) to BD theory with a cosmological constant.https://doi.org/10.1140/epjc/s10052-021-09123-7 |
| spellingShingle | Hatice Özer Özgür Delice Gravitational waves in Brans–Dicke theory with a cosmological constant European Physical Journal C: Particles and Fields |
| title | Gravitational waves in Brans–Dicke theory with a cosmological constant |
| title_full | Gravitational waves in Brans–Dicke theory with a cosmological constant |
| title_fullStr | Gravitational waves in Brans–Dicke theory with a cosmological constant |
| title_full_unstemmed | Gravitational waves in Brans–Dicke theory with a cosmological constant |
| title_short | Gravitational waves in Brans–Dicke theory with a cosmological constant |
| title_sort | gravitational waves in brans dicke theory with a cosmological constant |
| url | https://doi.org/10.1140/epjc/s10052-021-09123-7 |
| work_keys_str_mv | AT haticeozer gravitationalwavesinbransdicketheorywithacosmologicalconstant AT ozgurdelice gravitationalwavesinbransdicketheorywithacosmologicalconstant |