标题： 相互作用的快子暗能量，具有可变的$G$和$Λ$ 显示英文标题

标题： Mutually interacting Tachyon dark energy with variable $G$ and $Λ$

摘要： 在本文中，我们考虑具有相互作用的快子标量场作为暗能量，在变量$G$和$\Lambda$的情况下进行研究。 我们假设一个平坦的宇宙，并具有特定的尺度因子形式，数值和图形地研究宇宙学参数。 也进行了状态寻找分析。 在相互作用参数的特殊选择下，我们成功得到了密度的解析表达式。 我们发现我们的模型在晚期阶段是稳定的，但在早期宇宙存在不稳定性。 显示英文摘要

摘要： In this paper we consider Tachyonic scalar field as dark energy with interaction between components in the case of variable $G$ and $\Lambda$. We assume a flat Universe with specific form of scale factor and study cosmological parameters numerically and graphically. Statefinder analysis also performed as well. In the special choice of interaction parameters we succeed to obtain analytical expression of densities. We find that our model will be stable in the late stage but there is an instability at the early Universe.