Physics Letters B (Sep 2022)

Quantum integration of elementary particle processes

  • Gabriele Agliardi,
  • Michele Grossi,
  • Mathieu Pellen,
  • Enrico Prati

Journal volume & issue
Vol. 832
p. 137228

Abstract

Read online

We apply quantum integration to elementary particle-physics processes. In particular, we look at scattering processes such as e+e−→qq¯ and e+e−→qq¯′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.