Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario
The purpose of this paper is to study the cosmological evolution of the universe in the framework of dynamical Chern-Simons modified gravity. We take pilgrim dark energy model with Hubble and event horizons in interacting scenario with cold dark matter. For this scenario, we discuss cosmological par...
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Online Access: | http://dx.doi.org/10.1155/2015/259578 |
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doaj-67e2bd2952f14a23bc5492389ee106be2020-11-25T00:07:55ZengHindawi LimitedAdvances in High Energy Physics1687-73571687-73652015-01-01201510.1155/2015/259578259578Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy ScenarioAbdul Jawad0Shamaila Rani1Department of Mathematics, COMSATS Institute of Information Technology, Lahore 54000, PakistanDepartment of Mathematics, COMSATS Institute of Information Technology, Lahore 54000, PakistanThe purpose of this paper is to study the cosmological evolution of the universe in the framework of dynamical Chern-Simons modified gravity. We take pilgrim dark energy model with Hubble and event horizons in interacting scenario with cold dark matter. For this scenario, we discuss cosmological parameters such as Hubble and equation of state and cosmological plane like ωϑ-ωϑ′ and squared speed of sound. It is found that Hubble parameter approaches the ranges 75-0.5+0.5 (for u=2) and (74, 74.30) (for u=1,-1,-2) for Hubble horizon pilgrim dark energy. It implies the ranges 74.80-0.005+0.005 (for u=2) and (73.4, 74) (for u=-2) for event horizon pilgrim dark energy. The equation of state parameter provides consistent ranges with different observational schemes. Also, ωϑ-ωϑ′ planes lie in the range (ωϑ=-1.13-0.25+0.24,ωϑ′<1.32). The squared speed of sound shows stability for all present models in the present scenario. We would like to mention here that our results of various cosmological parameters show consistency with different observational data like Planck, WP, BAO, H0, SNLS, and WMAP.http://dx.doi.org/10.1155/2015/259578 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdul Jawad Shamaila Rani |
spellingShingle |
Abdul Jawad Shamaila Rani Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario Advances in High Energy Physics |
author_facet |
Abdul Jawad Shamaila Rani |
author_sort |
Abdul Jawad |
title |
Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario |
title_short |
Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario |
title_full |
Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario |
title_fullStr |
Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario |
title_full_unstemmed |
Cosmological Analysis of Dynamical Chern-Simons Modified Gravity via Dark Energy Scenario |
title_sort |
cosmological analysis of dynamical chern-simons modified gravity via dark energy scenario |
publisher |
Hindawi Limited |
series |
Advances in High Energy Physics |
issn |
1687-7357 1687-7365 |
publishDate |
2015-01-01 |
description |
The purpose of this paper is to study the cosmological evolution of the universe in the framework of dynamical Chern-Simons modified gravity. We take pilgrim dark energy model with Hubble and event horizons in interacting scenario with cold dark matter. For this scenario, we discuss cosmological parameters such as Hubble and equation of state and cosmological plane like ωϑ-ωϑ′ and squared speed of sound. It is found that Hubble parameter approaches the ranges 75-0.5+0.5 (for u=2) and (74, 74.30) (for u=1,-1,-2) for Hubble horizon pilgrim dark energy. It implies the ranges 74.80-0.005+0.005 (for u=2) and (73.4, 74) (for u=-2) for event horizon pilgrim dark energy. The equation of state parameter provides consistent ranges with different observational schemes. Also, ωϑ-ωϑ′ planes lie in the range (ωϑ=-1.13-0.25+0.24,ωϑ′<1.32). The squared speed of sound shows stability for all present models in the present scenario. We would like to mention here that our results of various cosmological parameters show consistency with different observational data like Planck, WP, BAO, H0, SNLS, and WMAP. |
url |
http://dx.doi.org/10.1155/2015/259578 |
work_keys_str_mv |
AT abduljawad cosmologicalanalysisofdynamicalchernsimonsmodifiedgravityviadarkenergyscenario AT shamailarani cosmologicalanalysisofdynamicalchernsimonsmodifiedgravityviadarkenergyscenario |
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1725417767644954624 |