Possible evidences from H(z) parameter data for physics beyond Lambda CDM

• 作者： Yang, Rong-Jia ^1,2,3,4
• 作者单位：
  1.  College of Physics Science and Technology, Hebei University, Baoding 071002, China

  2.  Hebei Key Lab of Optic-Electronic Information and Materials, Hebei University, Baoding 071002, China

  3.  National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, Hebei University, Baoding 071002, China

  4.  Key Laboratory of High-pricision Computation and Application of Quantum Field Theory of Hebei Province, Hebei University, Baoding 071002, China
• 提交时间：2023-05-24

摘要 : We analyse $H(z)$ parameter data with some conditions by using Lagrange mean value theorem in Calculus. We find that: (1) there exists at least one decelerated phase at 1 $ sigma$ confidence level in the redshift range $(0.38, 0.59)$; (2) the equation of motion of dark energy may be less than $-1$ at 1 $ sigma$ confidence level at some redshifts in the redshift range $(1.3, 1.53)$; (3) there exists at least one accelerated phase at 1 $ sigma$ confidence level in the redshift range $(1.037, 1.944)$. These results may provide possible evidences for physics beyond $ Lambda$CDM.

• 来自： 杨荣佳
• 分类： 天文学 >> 星系和宇宙学
• 引用： ChinaXiv:202305.00221 (或此版本 ChinaXiv:202305.00221V1)
  DOI:10.12074/202305.00221V1
  CSTR:32003.36.ChinaXiv.202305.00221.V1
• 推荐引用方式： Yang, Rong-Jia.(2023).Possible evidences from H(z) parameter data for physics beyond Lambda CDM.CSTR:32003.36.ChinaXiv.202305.00221.V1 (点此复制)