标题： 从圈树对偶性得到的微分横截面和衰变率的理论预测 显示英文标题

标题： Theoretical predictions to differential cross sections and decay rates from the loop-tree duality

摘要： 理解微扰量子场论中紫外和红外奇点的抵消对于发展和自动化各种用于高能对撞机可观测量的精确预测的理论工具有着至关重要的意义。 环-树对偶旨在通过以相同的方式处理环级和树级贡献，在被积函数层面上实现奇点的局部抵消，从而避免维度正则化，以此寻找一种高效解决方案。 在本次讨论中，我们利用环-树对偶表示中真空振幅的因果性质，展示了其在更高阶物理过程中的一些不同应用。 显示英文摘要

摘要： Understanding the cancellation of ultraviolet and infrared singularities in perturbative quantum field theory is of central importance for the development and automation of various theoretical tools that make accurate predictions for observables at high-energy colliders. The loop-tree duality aims to find an efficient solution by treating loop and tree-level contributions under the same foot to achieve a local cancellation of singularities at the integrand level, and thus avoiding dimensional regularisation. In this talk, we exploit the causal properties of vacuum amplitudes in the loop-tree duality representation to present different applications to physical processes at higher orders.