论文标题
纠缠平衡的二次重力的出现
Emergence of quadratic gravity from entanglement equilibrium
论文作者
论文摘要
在这项工作中，我们从局部因果钻石的纠缠平衡中得出了二次重力的线性化方程。我们不是从WALD熵处方（取决于引力拉格朗日）开始，而是基于对数矫正到地平线纠缠熵的模型独立方法。通过这种方式，我们能够在不使用有关重力动力学的任何先验知识的情况下显示纠缠平衡的线性二次重力的出现。如复制术的纠缠计算所预测的那样，对熵的对数校正具有负符号，我们发现二次重力校正项具有避免理论的速度不稳定性的必要符号。
In this work, we derive the linearised equations of quadratic gravity from entanglement equilibrium of local causal diamonds. Rather than starting from the Wald entropy prescription (which depends on the gravitational Lagrangian), we employ a model independent approach based on the logarithmic corrections to horizon entanglement entropy. In this way, we are able to show the emergence of linearised quadratic gravity from entanglement equilibrium without using any a priori knowledge about gravitational dynamics. If the logarithmic correction to entropy has a negative sign, as predicted by replica trick calculations of entanglement entropy, we find that the quadratic gravity correction terms have the sign necessary to avoid tachyonic instabilities of the theory.
