804 citations · 6.8k across the 96 of their papers we have counts for
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astro-ph2005★ 2 cited
Observational Constraints on Variable Chaplygin Gas
Zong-Kuan Guo, Yuan-Zhong Zhang
We investigate observational constraints on the variable Chaplygin gas model from the gold sample of type Ia supernova data and the recent measurements of the X-ray gas mass fracti…
astro-ph2005★ 125 cited
Cosmology with a Variable Chaplygin Gas
Zong-Kuan Guo, Yuan-Zhong Zhang
We consider a new generalized Chaplygin gas model that includes the original Chaplygin gas model as a special case. In such a model the generalized Chaplygin gas evolves as from du…
astro-ph2005★ 138 cited
Parametrization of Quintessence and Its Potential
Zong-Kuan Guo, Nobuyoshi Ohta, Yuan-Zhong Zhang
We develop a theoretical method of constructing the quintessence potential directly from the effective equation of state function , which describes the properties of the dark…