Gravastars in a Non-minimally Coupled Gravity with Electromagnetism

التفاصيل البيبلوغرافية
العنوان: Gravastars in a Non-minimally Coupled Gravity with Electromagnetism
المؤلفون: Sert, Özcan, Adak, Muzaffer
المصدر: Eur. Phys. J. C (2021) 81: 1006
سنة النشر: 2021
المجموعة: General Relativity and Quantum Cosmology
High Energy Physics - Theory
مصطلحات موضوعية: General Relativity and Quantum Cosmology, High Energy Physics - Theory
الوصف: In this paper we investigate the gravitational vacuum stars which called gravastars in the non-minimally coupled models with electromagnetic and gravitational fields. We consider two non-minimal models and find the corresponding spherically symmetric exact solutions in the interior of the star consisting of the dark energy condensate. Our models turn out to be Einstein-Maxwell model at the outside of the star and the solutions become the Reissner-Nordstr{\"o}m solution. The physical quantities of these models are continuous and non-singular in some range of parameters and the exterior geometry continuously matches with the interior geometry at the surface. We calculate the matter mass, the total gravitational mass, the electric charge and redshift of the star for the two models. We notice that these quantities except redshift are dependent of a subtle free parameter, $k$, of the model. We also remark a wide redshift range from zero to infinity depending on one free parameter, $\beta$, in the second model.
Comment: 16 pages
نوع الوثيقة: Working Paper
DOI: 10.1140/epjc/s10052-021-09804-3
URL الوصول: http://arxiv.org/abs/2110.11092
رقم الأكسشن: edsarx.2110.11092
قاعدة البيانات: arXiv
الوصف
DOI:10.1140/epjc/s10052-021-09804-3