论文标题
使用世界量子场理论的第三次旋转后秩序旋转身体的保守和辐射动力学
Conservative and radiative dynamics of spinning bodies at third post-Minkowskian order using worldline quantum field theory
论文作者
论文摘要
Using the spinning worldline quantum field theory formalism we calculate the quadratic-in-spin momentum impulse $Δp_i^μ$ and spin kick $Δa_i^μ$ from a scattering of two arbitrarily oriented spinning massive bodies (black holes or neutron stars) in a weak gravitational background up to third post-Minkowskian (PM) order ($G^3$).在潜在区域进行了两循环的Feynman积分，得出了保守的结果。对于与轨道角动量排列的旋转，我们发现一个保守的散射角度完全与最新的牛顿后结果一致。使用先前由Plefka，Steinhoff和目前的作者获得的2pm辐射辐射动量，我们将角度推广到包括辐射反应效应，在这种情况下，它可以避免在高能极限内的分歧。
Using the spinning worldline quantum field theory formalism we calculate the quadratic-in-spin momentum impulse $Δp_i^μ$ and spin kick $Δa_i^μ$ from a scattering of two arbitrarily oriented spinning massive bodies (black holes or neutron stars) in a weak gravitational background up to third post-Minkowskian (PM) order ($G^3$). Two-loop Feynman integrals are performed in the potential region, yielding conservative results. For spins aligned to the orbital angular momentum we find a conservative scattering angle that is fully consistent with state-of-the-art post-Newtonian results. Using the 2PM radiated angular momentum previously obtained by Plefka, Steinhoff and the present authors we generalize the angle to include radiation-reaction effects, in which case it avoids divergences in the high-energy limit.
