作为滚动快子的新年龄图暗能量
New agegraphic dark energy as a rolling tachyon
摘要：
结合广义相对论和量子力学中的测不准关系，时空量子涨落的能量密度可以看作是暗能量。所谓的年龄暗能量模型就是基于这一观点提出的，它引入了宇宙的年龄作为长度测度。最近提出了一种新的年龄记录暗能量模型，其中动态暗能量由宇宙的共形年龄来度量。另一方面，标量场暗能量模型，如快子，通常被认为是对暗能量的一些基本理论的有效描述。本文证明了新的年龄记录暗能量可以完全用快子标量场来描述。因此，我们重建的潜力和快子标量场的动力学，根据新的年龄暗能量的演变。
英文摘要：
Combining the general relativity and the uncertainty relation in quantum mechanics, the energy density of quantum fluctuations of space-time can be viewed as dark energy. The so-called agegraphic dark energy model is just based on this viewpoint, in which the age of the universe is introduced as the length measure. Recently, the new agegraphic dark energy model was proposed, where the dynamical dark energy is measured by the conformal age of the universe. On the other hand, scalar-field dark energy models like tachyon are often regarded as an effective description of some underlying theory of dark energy. In this paper, we show that the new agegraphic dark energy can be described completely by a tachyon scalar-field. We thus reconstruct the potential and the dynamics of the tachyon scalar-field, according to the evolution of the new agegraphic dark energy.
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