A Non-Singular Closed Bouncing Universe Without Violation of Null Energy Condition
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2022
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| _version_ | 1876459191915249664 |
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| author | Nasr Ahmed |
| author_facet | Nasr Ahmed |
| contents | A Non-Singular Closed Bouncing Universe Without Violation of Null Energy Condition Nasr Ahmed Tarek M. Kamel Mohamed I. Nouh Física, Astronomía y Matemáticas Cosmology: theory cosmology: parameters A matter bouncing entropy-corrected cosmological model has been suggested. The model allows only positive curvature with negative pressure and no violation of the null energy condition. The result obtained in this paper is supported by some recent theoretical works where the combination of positive spatial curvature and vacuum energy leads to non-singular bounces with no violation of the null energy condition. An important feature of the current model is that evolutions of the cosmic pressure, energy density and equation of state parameter are independent of the values of the prefactors α and β in the corrected entropy-area relation. The validity of the classical and the new nonlinear energy conditions has been discussed. The cosmographic parameters have been analyzed. 2022 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57175502007 https://www.redalyc.org/journal/571/57175502007/ https://www.redalyc.org/journal/571/57175502007/html/ https://www.redalyc.org/journal/571/57175502007/57175502007.epub https://www.redalyc.org/journal/571/57175502007/movil 10.22201/ia.01851101p.2022.58.02.07 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.58 |
| format | Artículo científico |
| id | redalyc_57175502007 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A Non-Singular Closed Bouncing Universe Without Violation of Null Energy Condition Nasr Ahmed Física, Astronomía y Matemáticas Cosmology: theory cosmology: parameters A Non-Singular Closed Bouncing Universe Without Violation of Null Energy Condition Nasr Ahmed Tarek M. Kamel Mohamed I. Nouh Física, Astronomía y Matemáticas Cosmology: theory cosmology: parameters A matter bouncing entropy-corrected cosmological model has been suggested. The model allows only positive curvature with negative pressure and no violation of the null energy condition. The result obtained in this paper is supported by some recent theoretical works where the combination of positive spatial curvature and vacuum energy leads to non-singular bounces with no violation of the null energy condition. An important feature of the current model is that evolutions of the cosmic pressure, energy density and equation of state parameter are independent of the values of the prefactors α and β in the corrected entropy-area relation. The validity of the classical and the new nonlinear energy conditions has been discussed. The cosmographic parameters have been analyzed. 2022 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57175502007 https://www.redalyc.org/journal/571/57175502007/ https://www.redalyc.org/journal/571/57175502007/html/ https://www.redalyc.org/journal/571/57175502007/57175502007.epub https://www.redalyc.org/journal/571/57175502007/movil 10.22201/ia.01851101p.2022.58.02.07 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.58 |
| title | A Non-Singular Closed Bouncing Universe Without Violation of Null Energy Condition |
| topic | Física, Astronomía y Matemáticas Cosmology: theory cosmology: parameters |
| url | https://www.redalyc.org/articulo.oa?id=57175502007 https://www.redalyc.org/journal/571/57175502007/ https://www.redalyc.org/journal/571/57175502007/html/ https://www.redalyc.org/journal/571/57175502007/57175502007.epub https://www.redalyc.org/journal/571/57175502007/movil |