论文标题
可见的能量替代黑暗能源
Visible Energy Alternative to Dark Energy
论文作者
论文摘要
通常认为量子引力效应在小尺度（Planck量表）上很重要，但实际上这些效应在大（宇宙学）尺度上也非常重要。人们认识到，在弯曲的时空中，不可避免的是可测量的动量的存在。在本文中，我们研究了晚期宇宙的热力学特性，存在最小的可测量动量临界值，该临界值编码了基础场理论的红外修饰。在这方面，我们考虑了一种非权威主义政权，并表明该理论本质上可测量的动量的存在导致宇宙的扩张加速，这可以解释为黑暗能量的替代方案。该模型中的宇宙在近乎过去经历了幻影线的交叉。
Quantum gravitational effects usually are assumed to be important on small scale (Planck scale), but actually these effects are also very significant on large (cosmological) scales. It is recognized that in curved spacetime, the existence of a minimal measurable momentum is inevitable. In this paper, we study thermodynamic properties of the late time universe in the presence of a minimal measurable momentum cutoff that encodes infra-red modification of the underlying field theory. In this regard, we consider a non-relativistic regime and show that the existence of a minimal measurable momentum in the very essence of the theory leads to accelerating expansion of the universe, which can be interpreted as an alternative to Dark Energy. The universe in this model has experienced the phantom line crossing in the near past.
