First-order phase transition of the Schwinger model with a quantum computer

Abstract We explore the first-order phase transition in the lattice Schwinger model in the presence of a topological θ-term by means of the variational quantum eigensolver (VQE). Using two different fermion discretizations, Wilson and staggered fermions, we develop parametric ansatz circuits suitabl...

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Bibliographic Details

Published in:	npj Quantum Information
Main Authors:	Takis Angelides, Pranay Naredi, Arianna Crippa, Karl Jansen, Stefan Kühn, Ivano Tavernelli, Derek S. Wang
Format:	Article
Language:	English
Published:	Nature Portfolio 2025-01-01
Online Access:	https://doi.org/10.1038/s41534-024-00950-6