تقرير
Non-singular non-flat universes
| العنوان: | Non-singular non-flat universes |
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| المؤلفون: | Salamanca, Andres Felipe Estupinan, Medina, Sergio Bravo, Nowakowski, Marek, Batic, Davide |
| المصدر: | Annals of Physics, 436, 168727 (2022) |
| سنة النشر: | 2021 |
| المجموعة: | General Relativity and Quantum Cosmology |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology |
| الوصف: | The quest to understand better the nature of the initial cosmological singularity is with us since the discovery of the expanding universe. Here, we propose several non-flat models, among them the standard cosmological scenario with a critical cosmological constant, the Einstein-Cartan cosmology, the Milne-McCrea universe with quantum corrections and a non-flat universe with bulk viscosity. Within these models, we probe into the initial singularity by using different techniques. Several nonsingular universes emerge, one of the possibilities being a static non-expanding and stable Einstein universe. Comment: 31 pages, 14 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.aop.2021.168727 |
| URL الوصول: | http://arxiv.org/abs/2112.13042 |
| رقم الأكسشن: | edsarx.2112.13042 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.aop.2021.168727 |
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