مشخصات پژوهش

صفحه نخست /Gauss–Bonnet cosmology with ...
عنوان Gauss–Bonnet cosmology with induced gravity and a non-minimally coupled scalar field on the brane
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها cosmology with extra dimensions, cosmological applications of theories with extra dimensions
چکیده We construct a cosmological model with a non-minimally coupled scalar field on the brane, where Gauss–Bonnet and induced gravity effects are taken into account. This model has 5D character at both high and low energy limits but reduces to 4D gravity for intermediate scales. While induced gravity is a manifestation of the IR limit of the model, the Gauss–Bonnet term and nonminimal coupling of the scalar field and induced gravity are essentially related to the UV limit of the scenario. We study the cosmological implications of this scenario focusing on the late time behavior of the solutions. In this setup, non-minimal coupling plays the role of an additional fine-tuning parameter that controls the initial density of the predicted finite density big bang. Also, nonminimal coupling has important implications for the bouncing nature of the solutions.
پژوهشگران بهناز فضل پور (نفر دوم)، کوروش نوذری (نفر اول)