熵宇宙学、晚期加速与量子反弹
On entropic cosmology, late time acceleration and the quantum bounce
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中文总结 AI 辅助
该研究提出圈量子宇宙学中量子反弹与暗能量的统一熵描述，推导弗里德曼方程并证实二者的熵起源。
中文摘要 AI 辅助
本研究给出了圈量子宇宙学（Loop Quantum Cosmology，LQC）中存在的量子反弹与驱动宇宙晚期加速的暗能量的统一熵描述。通过考虑宇宙的最小面积$A_0$，并构造由$S_Q$、$S_{BH}$和$S_{DE}$之和组成的修正熵面积，推导了弗里德曼方程。研究表明，在$A\backsim A_0$的极限下，存在一个依赖于最小面积的临界密度，该临界密度会产生量子反弹；此外，在$A\boxed{\text{大}}\boxed{\text{于}}A_0$（宇宙处于大尺度）的极限下，晚期动力学给出了一个加速的尺度因子。因此，我们可以认为量子反弹与暗能量具有熵起源。
英文摘要
In this work, we present a unified entropic description of the quantum bounce that is present in Loop Quantum Cosmology (LQG) and dark energy that drives the late time acceleration of the Universe. By considering a minimal area $A_0$ for the Universe and a modified entropy area constructed as the sum of $S_Q$, $S_{BH}$ and $S_{DE}$, we derive the Friedmann equations. We show that in the limit $A\sim A_0$, there is a critical density that generates the quantum bounce and depends on the minimal area. Moreover, in the limit $A\gg A_0$ (large Universe) the late time dynamics gives an accelerating scale factor. Therefore, we can argue an entropic origin for the quantum bounce and dark energy.
