暗能量方程(英文)

The Equation of Dark Energy

根据Chevallier-Polarski-Linder参数化,w(a)=w0+wa(1-a),提出了暗能量压强方程,p(a)=p0+pa(1-a),由此导出了暗能量密度ρDE、状态方程(EoS)w、哈勃参数H以及光度距离DL的数学表达式.所得的定性结果均与当今宇宙学观测结果一致,而定量结果的误差小于1%.

According to Chevallier-Polarski-Linder（ CPL） parametrization,w（ a） = w0＋ wa（ 1-a）,an expression for the pressure of dark energy was proposed,p（ a） = p0＋ pa（ 1- a）. The expressions for the density of dark energy,the equation of state（ Eo S） w,Hubble parameter and the luminosity distance DLwere obtained. All qualitative results are consistent with the results of current cosmology observations. As for quantitative results,the errors are less than 1%.