Year: 2020
Type: article
Abstract: We investigate observational constraints on the running vacuum model (RVM) of in a spatially curved universe, where is the model parameter, corresponds to the spatial curvature constant, represents the scalar factor, and is a constant defined by the boundary conditions. We study the CMB power spectra with several sets of and in the RVM. By fitting the cosmological data, we find that the best fitted value for RVM is slightly smaller than that of CDM in the non-flat universe, along with the constraints of (68% C.L.) and (95% C.L.). In particular, our results favor the open universe in both CDM and RVM. In addition, we show that the cosmological constraints of (RVM) and ( CDM) at 95% C.L. for the neutrino mass sum are relaxed in both models in the spatially curved universe.
Source: Chinese Physics C
Authors: Chao-Qiang Geng, Yan-Ting Hsu, Lu Yin, Kaituo Zhang
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3006044968