论文标题
宇宙学扰动在模型中具有相互作用的动力学暗能量的演变
Evolution of cosmological perturbations in the models with interacting dynamical dark energy
论文作者
论文摘要
在模型中考虑了宇宙学扰动的进化，该模型具有动力学暗能量，非重力与暗物质相互作用。状态参数（EOS）的暗能量方程在时间上有所不同，并且通过其绝热声速进行了参数。这种相互作用的暗能量的模型比恒定EOS具有优势，因为它避免了在辐射时以某些类型的相互作用在黑暗扇区的相互作用时，在辐射时代的非绝热不稳定性。得出了深色能扰动方程解决方案的稳定性条件。分析了深色成分之间的其他相互作用强度对其中的密度和速度扰动演变的影响，以进行少量和幻影类型的暗能量。
Evolution of cosmological perturbations is considered in the model with dynamical dark energy which non-gravitationally interacts with dark matter. The dark energy equation of state parameter (EoS) is varying in time and is parameterized by its adiabatic sound speed. Such model of interacting dark energy has advantages over model with constant EoS, because it avoids non-adiabatic instabilities of dark energy at radiation dominated epoch for certain types of interaction in dark sector. The stability conditions for solutions of equations of dark energy perturbations were derived. The impact of strength of additional interaction between dark components on the evolution of density and velocity perturbations in them is analysed for quintessence and phantom types of dark energy.
