论文标题
无腐烂的熵重力:模型和实验测试
Decoherence-Free Entropic Gravity: Model and Experimental Tests
论文作者
论文摘要
埃里克·维林德(Erik Verlinde)的熵重力理论[Arxiv:1001.0785],假设重力不是基本力量,而是热力学上出现的,它吸引了很多关注,这可能是解决量子重力问题的解决方案。有些人以熵力本质上是嘈杂的理由来裁定了这一理论,因此,熵重力将显示出比超冷的中子实验中观察到的更具变色的。我们通过建模作用于小物体作为开放量子系统的线性重力来解决这种批评。在强耦合极限中,当模型的无单位自由参数$σ$变为无限时,熵主方程会恢复保守的重力。我们表明,提出的主方程与\ textIt {q} \ textsc {bounce}实验超冷中子的实验完全兼容,只要$σ\ gtrsim 250 $ at $ 90 \%$ $ $ prouits。此外,熵主方程可预测长时间尺度和大质量上的能量增加和分离,这是桌面实验可以测试的现象。此外,将熵重力的能量与Diós-penrose模型的能量增加到重力诱导的分解性的能量增加表明,这两种理论是不相容的。这些发现支持熵引力的理论,激发了未来的实验和理论研究。
Erik Verlinde's theory of entropic gravity [arXiv:1001.0785], postulating that gravity is not a fundamental force but rather emerges thermodynamically, has garnered much attention as a possible resolution to the quantum gravity problem. Some have ruled this theory out on grounds that entropic forces are by nature noisy and entropic gravity would therefore display far more decoherence than is observed in ultra-cold neutron experiments. We address this criticism by modeling linear gravity acting on small objects as an open quantum system. In the strong coupling limit, when the model's unitless free parameter $σ$ goes to infinity, the entropic master equation recovers conservative gravity. We show that the proposed master equation is fully compatible with the \textit{q}\textsc{Bounce} experiment for ultra-cold neutrons as long as $σ\gtrsim 250$ at $90\%$ confidence. Furthermore, the entropic master equation predicts energy increase and decoherence on long time scales and for large masses, phenomena which tabletop experiments could test. In addition, comparing entropic gravity's energy increase to that of the Diósi-Penrose model for gravity induced decoherence indicates that the two theories are incompatible. These findings support the theory of entropic gravity, motivating future experimental and theoretical research.