论文标题
物质耦合在巨大的重力中
Matter Coupling in Massive Gravity
论文作者
论文摘要
我们讨论DRGT与Spin-0，Spin-1/2或Spin-1物质相互作用的DRGT重力。与物质颗粒耦合的大型自旋2粒子的有效理论是直接在振幅水平上构建的。在这种情况下，我们计算重力康普顿散射幅度并研究其紫外线性能。虽然康普顿振幅通常以$ \ Mathcal {o}（E^6）$生长，但我们确定了参数空间的区域，其中它们被软化至$ \ Mathcal {o}（e^4）$，甚至$ \ MATHCAL {O}（O^3）$，这允许较大的有效范围更大的有效范围。在这些区域中，要实现前向康普顿幅度的阳性和超阳性，并且对等原理自动出现。
We discuss the dRGT massive gravity interacting with spin-0, spin-1/2, or spin-1 matter. The effective theory of a massive spin-2 particle coupled to matter particles is constructed directly at the amplitude level. In this setting we calculate the gravitational Compton scattering amplitudes and study their UV properties. While the Compton amplitudes generically grow with energy as $\mathcal{O}(E^6)$, we identify regions of the parameter space where they are softened to $\mathcal{O}(E^4)$ or even $\mathcal{O}(E^3)$, which allows for a larger validity range of the effective theory. In these regions, both positivity and beyond-positivity of the forward Compton amplitudes are fulfilled, and the equivalence principle automatically emerges.
