The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy
During this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue of the observed value for spectral index, ns(k), for massive scalar field the best value for the first slow roll paramet...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2016/2594189 |
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| author | Haidar Sheikhahmadi Ali Aghamohammadi Khaled Saaidi |
| author_facet | Haidar Sheikhahmadi Ali Aghamohammadi Khaled Saaidi |
| author_sort | Haidar Sheikhahmadi |
| collection | DOAJ |
| description | During this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue of the observed value for spectral index, ns(k), for massive scalar field the best value for the first slow roll parameter, ϵ, is achieved. In addition, the energy density of vacuum quantum fluctuations for massless scalar field is obtained. The effects of these fluctuations on other components of the universe are studied. By solving the conservation equation, for some different examples, the energy density for different components of the universe is obtained. In the case which all components of the universe are in an interaction, the different dissipation functions, Q~i, are considered. The time evolution of ρDE(z)/ρcri(z) shows that Q~=3γH(t)ρm has the best agreement in comparison to observational data including CMB, BAO, and SNeIa data set. |
| format | Article |
| id | doaj-art-3b1ec99fe6a0454a9ad529d81888dc0b |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-3b1ec99fe6a0454a9ad529d81888dc0b2025-02-03T01:02:42ZengWileyAdvances in High Energy Physics1687-73571687-73652016-01-01201610.1155/2016/25941892594189The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark EnergyHaidar Sheikhahmadi0Ali Aghamohammadi1Khaled Saaidi2Institute for Advanced Studies in Basic Sciences (IASBS), Gava Zang, Zanjan 45137-66731, IranIslamic Azad University, Sanandaj Branch, Pasdaran Street, P.O. Box 618, Sanandaj, IranDepartment of Physics, Faculty of Science, University of Kurdistan, Pasdaran Street, Sanandaj 66177-15175, IranDuring this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue of the observed value for spectral index, ns(k), for massive scalar field the best value for the first slow roll parameter, ϵ, is achieved. In addition, the energy density of vacuum quantum fluctuations for massless scalar field is obtained. The effects of these fluctuations on other components of the universe are studied. By solving the conservation equation, for some different examples, the energy density for different components of the universe is obtained. In the case which all components of the universe are in an interaction, the different dissipation functions, Q~i, are considered. The time evolution of ρDE(z)/ρcri(z) shows that Q~=3γH(t)ρm has the best agreement in comparison to observational data including CMB, BAO, and SNeIa data set.http://dx.doi.org/10.1155/2016/2594189 |
| spellingShingle | Haidar Sheikhahmadi Ali Aghamohammadi Khaled Saaidi The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy Advances in High Energy Physics |
| title | The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy |
| title_full | The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy |
| title_fullStr | The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy |
| title_full_unstemmed | The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy |
| title_short | The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy |
| title_sort | effect of de sitter like background on increasing the zero point budget of dark energy |
| url | http://dx.doi.org/10.1155/2016/2594189 |
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