Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity
The study of energy conditions has many significant applications in general relativistic and cosmological contexts. This paper explores the energy conditions in the framework of the most general scalar-tensor theory with field equations involving second-order derivatives. For this purpose, we use fl...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2013/253985 |
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| _version_ | 1832551158494789632 |
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| author | M. Sharif Saira Waheed |
| author_facet | M. Sharif Saira Waheed |
| author_sort | M. Sharif |
| collection | DOAJ |
| description | The study of energy conditions has many significant applications in general relativistic and cosmological contexts. This paper explores the energy conditions in the framework of the most general scalar-tensor theory with field equations involving second-order derivatives. For this purpose, we use flat FRW universe model with perfect fluid matter contents. By taking power law ansatz for scalar field, we discuss the strong, weak, null, and dominant energy conditions in terms of deceleration, jerk, and snap parameters. Some particular cases of this theory like
k
-essence model, modified gravity theories and so forth. are analyzed with the help of the derived energy conditions, and the possible constraints on the free parameters of the presented models are determined. |
| format | Article |
| id | doaj-art-fe1c0e0443bb4588996fe533e72c7061 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-fe1c0e0443bb4588996fe533e72c70612025-02-03T06:04:55ZengWileyAdvances in High Energy Physics1687-73571687-73652013-01-01201310.1155/2013/253985253985Energy Conditions in a Generalized Second-Order Scalar-Tensor GravityM. Sharif0Saira Waheed1Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, PakistanDepartment of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, PakistanThe study of energy conditions has many significant applications in general relativistic and cosmological contexts. This paper explores the energy conditions in the framework of the most general scalar-tensor theory with field equations involving second-order derivatives. For this purpose, we use flat FRW universe model with perfect fluid matter contents. By taking power law ansatz for scalar field, we discuss the strong, weak, null, and dominant energy conditions in terms of deceleration, jerk, and snap parameters. Some particular cases of this theory like k -essence model, modified gravity theories and so forth. are analyzed with the help of the derived energy conditions, and the possible constraints on the free parameters of the presented models are determined.http://dx.doi.org/10.1155/2013/253985 |
| spellingShingle | M. Sharif Saira Waheed Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity Advances in High Energy Physics |
| title | Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity |
| title_full | Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity |
| title_fullStr | Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity |
| title_full_unstemmed | Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity |
| title_short | Energy Conditions in a Generalized Second-Order Scalar-Tensor Gravity |
| title_sort | energy conditions in a generalized second order scalar tensor gravity |
| url | http://dx.doi.org/10.1155/2013/253985 |
| work_keys_str_mv | AT msharif energyconditionsinageneralizedsecondorderscalartensorgravity AT sairawaheed energyconditionsinageneralizedsecondorderscalartensorgravity |