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Approaching the Continuum Limit of Gauge Theories on Quantum Computers

Marc Illa, InQubator for Quantum Simulation, University of Washington
Wednesday, May 28, 2025 - 1:30pm
PAT C-520

In this talk, I will present novel strategies to approach the continuum limit of lattice gauge theories on quantum hardware by combining classically improved Hamiltonians with state-dependent quantum corrections. Specifically, we develop and analyze Kogut-Susskind-type Hamiltonians on honeycomb and hyper-honeycomb spatial lattices, which minimize plaquette operator complexity by involving only three-link vertices. These constructions are enhanced through quantum tadpole improvements, where we explore the emergence of spacetime-dependent renormalizations in real-time simulations, highlighting the need for coefficient updates that depend on the current quantum state. Together, these developments mark significant steps toward scalable and accurate quantum simulations of gauge theories.

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