Towards a Quantum Computing Algorithm for Helicity Amplitudes and Parton Showers

Understand

The interpretation of measurements of high-energy particle collisions relies heavily on the performance of full event generators.

• By far the largest amount of time to predict the kinematics of multi-particle final states is dedicated to the calculation of the hard process and the subsequent parton shower step.
• With the continuous improvement of quantum devices, dedicated algorithms are needed to exploit the potential quantum computers can provide.
• We propose general and extendable algorithms for quantum gate computers to facilitate calculations of helicity amplitudes and the parton shower process.