Hello everyone, Next Wednesday 22.11.2023 at 15:30 in room D5.01 we're happy to welcome Matteo D'Anna from IRSOL/ETH as a guest speaker. Matteo will be telling us about some new algorithms for simulating a 1+1D model of QED, title and abstract below. Join us in person or online at https://meet.jit.si/CQISeminarTalks Warm regards, Will Schober Title: Digital quantum simulations of quantum electrodynamics Abstract: Digital quantum simulations of gauge theories are an active field of research within the community of lattice simulations of gauge theories. I will focus on digital quantum simulations of the Schwinger Model with theta-term. This is a U(1) gauge theory which exhibits confinement, and by probing the system from the outside with two charged objects it is possible to observe an analogous process to string breaking. Placing the gauge theory on a lattice yield a discretized version that can be simulated on (quantum) computers. I will present two techniques, one for estimating the eigenenergies of the lattice theory and another auxiliary algorithm for suppressing high-energy excitations. This two newly introduced algorithms combine to give very precise estimations for ground state energy both for the Schwinger Model and for the string breaking picture.