Stout Smearing on a Quantum Computer

Understand

Smearing of gauge-field configurations in lattice field theory improves the results of lattice simulations by suppressing high energy modes from correlation functions.

• In quantum simulations, high kinetic energy eigenstates are introduced when the time evolution operator is approximated such as Trotterization.
• While improved Trotter product formulae exist to reduce the errors, they have diminishing accuracy returns with respect to resource costs.
• Therefore having an algorithm that has fewer resources than an improved Trotter formula is desirable.