Quantum integration of elementary particle processes
Image credit: 2201.01547Abstract
We apply quantum integration to elementary particle-physics processes. In particular, we look at scattering processes such as e+ e− → q q̄ and e+ e− → q q̄ W. The corresponding probability distributions can be first appropriately loaded on a quantum computer using either quantum Generative Adversarial Networks or an exact method. The distributions are then integrated using the method of Quantum Amplitude Estimation which shows a quadratic speed-up with respect to classical techniques. In simulations of noiseless quantum computers, we obtain per-cent accurate results for one- and two-dimensional integration with up to six qubits. This work paves the way towards taking advantage of quantum algorithms for the integration of high-energy processes.
