• Corpus ID: 16095884

How to Measure the Cosmic Curvature

  title={How to Measure the Cosmic Curvature},
  author={Ying-Qiu Gu and Maxim Yu. Khlopov},
  journal={arXiv: General Relativity and Quantum Cosmology},
The conventional method to determine the cosmic curvature is to measure the total mass density $\Omega_{\rm tot}$. Unfortunately the observational $\Omega_{\rm tot}$ is closely near the critical value 1. The computation of this paper shows that $\Omega_{\rm tot}\approx 1$ is an inevitable result for the young universe independent of the spatial topology. So the mass density is not a good criterion to determine the cosmic curvature. In this paper, we derive a new criterion based on the galactic… 
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