تقرير
Stephani Cosmology: Entropically Viable But Observationally Challenged
| العنوان: | Stephani Cosmology: Entropically Viable But Observationally Challenged |
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| المؤلفون: | Ong, Yen Chin, Hashemi, S. Sedigheh, An, Rui, Wang, Bin |
| المصدر: | Eur. Phys. J. C 78 (2018) 405 |
| سنة النشر: | 2017 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory |
| الوصف: | Inhomogeneous cosmological models such as the Stephani universes could, in principle, provide an explanation for the observed accelerated expansion of the Universe. Working with a concrete, popular model of the Stephani cosmology -- the Stephani-Dabrowski model, we found that it is entropically viable. We also comment on the energy conditions and the two-sheeted geometry of the spacetime. However, similar to the LTB models, despite satisfying the holographic principle, Stephani cosmology has difficulty satisfying all the constraints from observations. Comment: Discussion on observational constraints elaborated. Version accepted by EPJC |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epjc/s10052-018-5866-1 |
| URL الوصول: | http://arxiv.org/abs/1712.02297 |
| رقم الأكسشن: | edsarx.1712.02297 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epjc/s10052-018-5866-1 |
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