Observational H(z) Data and Cosmological Models

نویسندگان

  • Hao Wei
  • Shuang Nan Zhang
چکیده

In this work, we confront ten cosmological models with observational H(z) data. The possible interaction between dark energy and dust matter is allowed in some of these models. Also, we consider the possibility of (effective) equation-of-state parameter (EoS) crossing −1. We find that the best models have an oscillating feature for both H(z) and EoS, with the EoS crossing −1 around redshift z ∼ 1.5. PACS numbers: 95.36.+x, 98.80.Es, 98.80.-k ∗ email address: [email protected]

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تاریخ انتشار 2006