论文标题
Tsallis全息暗能量的Tachyon模型
Tachyon model of Tsallis holographic dark energy
论文作者
论文摘要
在本文中，我们考虑了FRW宇宙中的Tachyon深色能量模型与Tsallis全息暗能场景之间的对应关系。我们演示了FRW宇宙中Tachyon暗能量的Tsallis全息图描述，并重建了描述标量场的动力学的潜在和基本结果，这些动力学描述了Tachyon cesmologe。在平坦的宇宙中，在tsallis全息暗能的tachyon模型中，与暗能与物质之间的相互作用无关，\ dot {t}^2必须始终为零。因此，在这种平坦的宇宙中，状态ω_d的方程始终为-1。对于非平台宇宙，\ dot {t}^2不能为零，因此不能用来解释宇宙常数的起源的ω_d= -1。 \ dot {t}^2单调减小，随着\ cos（r_h/a）的增加和\ cosh（r_h/a）的增加而减小。特别是，对于一个开放的宇宙，\ dot {t}^2总是大于零，而对于封闭的宇宙，\ dot {t}^2总是小于Zerowhich物理上无效。此外，我们得出的结论是，随着\ cos（r_h/a）和\ cosh（r_h/a）的增加，\ dot {t}^2始终会单调减小，而不论b^2的值如何。
In this paper, we consider the correspondence between the tachyon dark energy model and the Tsallis holographic dark energy scenario in an FRW universe.We demonstrate the Tsallis holographic description of tachyon dark energy in an FRW universe and reconstruct the potential and basic results of the dynamics of the scalar field which describe the tachyon cosmology. In a flat universe, in the tachyon model of Tsallis holographic dark energy, independent of the existence of interaction between dark energy and matter or not, \dot{T}^2 must always be zero. Therefore, the equation of state ω_D is always -1 in such a flat universe. For a non-flat universe, \dot{T}^2 cannot be zero so that ω_D=-1 which cannot be used to explain the origin of the cosmological constant. \dot{T}^2 monotonically decreases with the increase in \cos(R_h/a) and \cosh(R_h/a) for different δ's. In particular, for an open universe, \dot{T}^2 is always larger than zero, while for a closed universe, \dot{T}^2 is always smaller than zerowhich is physically invalid. In addition, we conclude that with the increase in \cos(R_h/a) and \cosh(R_h/a), \dot{T}^2 always decreases monotonically irrespective of the value of b^2.
