تقرير
Non-minimally coupled quintessence in the Gauss-Bonnet model, symmetry breaking, and cosmic acceleration
| العنوان: | Non-minimally coupled quintessence in the Gauss-Bonnet model, symmetry breaking, and cosmic acceleration |
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| المؤلفون: | Sadjadi, H. Mohseni |
| سنة النشر: | 2023 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, High Energy Physics - Theory |
| الوصف: | We consider a model consisting of a quintessence coupled to the Ricci scalar and the Gauss-Bonnet invariant. We propose a mechanism for the rising of dark energy in the matter era, alleviating the coincidence problem. The role of the Gauss-Bonnet invariant is to restore the initial $Z_2$ symmetry. The Ricci scalar breaks this symmetry during the Universe's expansion and activates the quintessence. In our model, the observational constraint on gravitational wave speed is respected. Comment: 14 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2310.03697 |
| رقم الأكسشن: | edsarx.2310.03697 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |