论文标题
耦合的广义三型深色能模型
A coupled generalized three-form dark energy model
论文作者
论文摘要
考虑了一个耦合的暗能量模型，其中暗能是由尘埃的一般三型场和深色物质代表的。通过将模型Lagrangian中的功能$ n $和$ i $作为三型领域的两个幂律函数，我们获得了进化方程式自主系统的两个固定点，包括吸引子和一个可用于减轻巧合问题的跟踪鞍点组成。在无法严格限制的目前三型领域$κX_{0} $边缘化之后，我们将模型与最新类型的IA Supernova（SN \ UpperCase \ uppercase \ appeptafter \ romannumeraly1} a），baryon声振荡（bao）和cosmic microwave backerviation（baryon ossertiation）（cosmic Microfave）（cosmic Microwave Backerviation） $ω__{M0} = 0.280 _ { - 0.048}^{+0.048} $和$λ= 0.011 _ { - 0.032}^{+0.032} $ $2σ$ pructrustrust，我们还发现，我们还发现最佳拟合有效的黑暗能量，即在状态（eos）$ -1 $ -1 $ -1 $ -1 $ 1 ATCHEND 0.2 ard crosse crosses $ -1 and ardd.2 at 0.2 ard ard ard ard intectif。
A coupled dark energy model is considered, in which dark energy is represented by a generalized three-form field and dark matter by dust. By assuming the functions $N$ and $I$ in the model's Lagrangian as two power-law functions of the three-form field, we obtain two fixed points of the autonomous system of evolution equations, consisting of a attractor and a tracking saddle point which can be used to alleviate the coincidence problem. After marginalizing the present three-form field $κX_{0}$ which is unable to be strictly restricted, we confront the model with the latest Type Ia Supernova (SN \uppercase\expandafter{\romannumeral1}a), Baryon Acoustic Oscillations (BAO) and Cosmic Microwave Backround (CMB) radiation observations with the fitting results $Ω_{m0}= 0.280_{-0.048}^{+0.048}$ and $λ=0.011_{-0.032}^{+0.032}$ in the $2σ$ confidence level, we also find that the best fitting effective dark energy equation of state (EOS) crosses $ -1$ at redshift around 0.2.
