论文标题
de Sitter空间中的重力四点功能
The graviton four-point function in de Sitter space
论文作者
论文摘要
我们计算树级的延迟重力四点相关函数，以及相关的四分之一波函数系数，用于在Sitter Spacetime中的爱因斯坦重力。我们以多种方式得出了这一结果：通过直接计算，使用形式主义和宇宙的波函数；通过启发式推导，利用扁平空间波形系数；通过使用Boostless Boost Bootstrap，尤其是宇宙光学定理的组合，振幅极限和明显的局部测试。我们发现不同方法之间的共识。
We compute the tree-level late-time graviton four-point correlation function, and the related quartic wavefunction coefficient, for Einstein gravity in de Sitter spacetime. We derive this result in several ways: by direct calculation, using the in-in formalism and the wavefunction of the universe; by a heuristic derivation leveraging the flat space wavefunction coefficient; and by using the boostless cosmological bootstrap, in particular the combination of the cosmological optical theorem, the amplitude limit, and the manifestly local test. We find agreement among the different methods.
