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. |