论文标题
持续音速的Tachyon模型中的中级和幂律通货膨胀
Intermediate and Power-Law Inflation in the Tachyon Model with Constant Sound Speed
论文作者
论文摘要
通过采用中间和幂律量表因子，我们以恒定的音速研究了鼠的通胀。我们对该模型中的扰动和非高斯参数进行了一些数值分析，并将结果与观察数据进行比较。通过在标量光谱指数和张量之间使用限制，从Planck2018 TT，TE，EE+LOWE+LOWE+BAO+BAO+BK14数据中获得，这是对从Planck2018 TT，EE+Loweb+Loweb+Loweb+liolevent and content和lestert and te的标量指数运行的限制，以及Planck2018 TT，TE，EE+LOWE+镜头+BK14+BAO+LIGO和VIRGO2016数据，我们发现该模型参数的可行性范围为$ 68 \％\％$ CL和$ 95 \％$ cl。我们还分析了该模型在等边和正交配置中的非高斯特征。 Based on Planck2018 TTT, EEE, TTE and EET data, we find the constraints on the sound speed as $0.276\leq c_{s}\leq 1$ at $68\%$ CL, $0.213\leq c_{s}\leq 1$ at $95\%$ CL, and $0.186\leq c_{s}\leq 1 $ at $ 97 \％$ cl。
By adopting the intermediate and power-law scale factors, we study the tachyon inflation with constant sound speed. We perform some numerical analysis on the perturbation and non-gaussianity parameters in this model and compare the results with observational data. By using the constraints on the scalar spectral index and tensor-to-scalar-ratio, obtained from Planck2018 TT, TE, EE+lowE+lensing+BAO+BK14 data, the constraint on the running of the scalar spectral index obtained from Planck2018 TT, TE, EE+lowEB+lensing data, and constraint on tensor spectral index obtained from Planck2018 TT, TE, EE +lowE+lensing+BK14+BAO+LIGO and Virgo2016 data, we find the observationally viable ranges of the model's parameters at both $68\%$ CL and $95\%$ CL. We also analyze the non-gaussian features of the model in the equilateral and orthogonal configurations. Based on Planck2018 TTT, EEE, TTE and EET data, we find the constraints on the sound speed as $0.276\leq c_{s}\leq 1$ at $68\%$ CL, $0.213\leq c_{s}\leq 1$ at $95\%$ CL, and $0.186\leq c_{s}\leq 1$ at $97\%$ CL.
