Speaker
Yibin Guo
(CQTA (Centre f. Quantum Techno. a. Application))
Description
The Schwinger model describes the QED in two-dimensional space-time. In this talk, I will present some results on the excited states of the lattice Schwinger model with the concurrent variational quantum eigensolver (cVQE). First, I will introduce elements of cVQE from the density matrix. Then, I will report results on the spectrum of the lattice Schwinger model, including nonvanishing background field, using a staggered Hamiltonian formulation. Finally, a novel method for extracting the additive mass renormalisation of the model from the energy gap will be discussed.
