Abstract
We consider multi-flavor massless (1 + 1)-dimensional QED with chemical potentials at finite spatial length and the zero-temperature limit. Its sign problem is solved using the mean-field calculation with complex saddle points.
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Tanizaki, Y., Tachibana, M. Multi-flavor massless QED2 at finite densities via Lefschetz thimbles. J. High Energ. Phys. 2017, 81 (2017). https://doi.org/10.1007/JHEP02(2017)081
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DOI: https://doi.org/10.1007/JHEP02(2017)081