FRW Cosmology with the Extended Chaplygin Gas
We propose extended Chaplygin gas equation of state for which it recovers barotropic fluid with quadratic equation of state. We use numerical method to investigate the behavior of some cosmological parameters such as scale factor, Hubble expansion parameter, energy density, and deceleration paramete...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/231452 |
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| _version_ | 1849402258421186560 |
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| author | B. Pourhassan E. O. Kahya |
| author_facet | B. Pourhassan E. O. Kahya |
| author_sort | B. Pourhassan |
| collection | DOAJ |
| description | We propose extended Chaplygin gas equation of state for which it recovers barotropic fluid with quadratic equation of state. We use numerical method to investigate the behavior of some cosmological parameters such as scale factor, Hubble expansion parameter, energy density, and deceleration parameter. We also discuss the resulting effective equation of state parameter. Using density perturbations we investigate the stability of the theory. |
| format | Article |
| id | doaj-art-8b2dd360d0fd48fcae00207fe6020f73 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-8b2dd360d0fd48fcae00207fe6020f732025-08-20T03:37:34ZengWileyAdvances in High Energy Physics1687-73571687-73652014-01-01201410.1155/2014/231452231452FRW Cosmology with the Extended Chaplygin GasB. Pourhassan0E. O. Kahya1Physics Department, Istanbul Technical University, Istanbul, TurkeyPhysics Department, Istanbul Technical University, Istanbul, TurkeyWe propose extended Chaplygin gas equation of state for which it recovers barotropic fluid with quadratic equation of state. We use numerical method to investigate the behavior of some cosmological parameters such as scale factor, Hubble expansion parameter, energy density, and deceleration parameter. We also discuss the resulting effective equation of state parameter. Using density perturbations we investigate the stability of the theory.http://dx.doi.org/10.1155/2014/231452 |
| spellingShingle | B. Pourhassan E. O. Kahya FRW Cosmology with the Extended Chaplygin Gas Advances in High Energy Physics |
| title | FRW Cosmology with the Extended Chaplygin Gas |
| title_full | FRW Cosmology with the Extended Chaplygin Gas |
| title_fullStr | FRW Cosmology with the Extended Chaplygin Gas |
| title_full_unstemmed | FRW Cosmology with the Extended Chaplygin Gas |
| title_short | FRW Cosmology with the Extended Chaplygin Gas |
| title_sort | frw cosmology with the extended chaplygin gas |
| url | http://dx.doi.org/10.1155/2014/231452 |
| work_keys_str_mv | AT bpourhassan frwcosmologywiththeextendedchaplygingas AT eokahya frwcosmologywiththeextendedchaplygingas |