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Stefano, O.D., Settineri, A., Macrì, V. et al. Reply to: Gauge non-invariance due to material truncation in ultrastrong-coupling quantum electrodynamics. Nat. Phys. 20, 379–380 (2024). https://doi.org/10.1038/s41567-023-02178-1
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DOI: https://doi.org/10.1038/s41567-023-02178-1