标题： 通过距离测量在晚期宇宙动力学中的量子引力效应痕迹 显示英文标题

标题： Traces of Quantum Gravity Effects at Late time Cosmological Dynamics via Distance Measures

摘要： 受黑洞热力学的熵-面积关系的启发，我们在广义不确定性原理（EUP）的框架下研究了平坦 Friedmann-Robertson-Walker (FRW) 宇宙中宇宙视界的热力学性质。所采用的 EUP 自然允许一个最小可测动量（等价于一个最大可测长度），作为理论中的红外截断。我们在此设定下推导出修正的 Friedmann 方程，并通过距离测量探索这些方程对晚期宇宙的一些预测。我们表明，在此框架下，有可能实现有效宇宙流体状态方程参数的晚期宇宙加速膨胀以及向幻影相的转变，而无需引入暗能量成分或修改引力理论。检查此框架下的各种距离度量表明，具有负变形参数的 EUP 已足以解释具有标准非相对论物质的晚期渐近 de Sitter 宇宙。 显示英文摘要

摘要： Inspired by the entropy-area relation of black hole thermodynamics, we study the thermodynamics of cosmological apparent horizon in a spatially flat Friedmann-Robertson-Walker (FRW) universe in the framework of an Extended Uncertainty Principle (EUP). The adopted EUP naturally admits a minimal measurable momentum (equivalently a maximal measurable length), as an infrared cutoff in the theory. We derive the modified Friedmann equations in this setup and explore some predictions of these equations for the late time universe via distance measures. We show that in this framework it is possible to realize the late time cosmic speed-up and transition to the phantom phase of the equation of state parameter of the effective cosmic fluid without recourse to any dark energy component or modified gravity. Inspection of various distance measures in this framework shows that an EUP with a negative deformation parameter suffices for the interpretation of the late time asymptotically de Sitter universe with standard non-relativistic matter.