2019Journal ArticleJ. Flick, D. Welakuh, M. Ruggenthaler, H. Appel, and A. Rubio, "Light–Matter Response in Nonrelativistic Quantum Electrodynamics," ACS Photonics 6 (11), 2757-2778 (2019).
2018Journal ArticleV. Rokaj, D. Welakuh, M. Ruggenthaler, and A. Rubio, "Light–matter interaction in the long-wavelength limit: no ground-state without dipole self-energy," Journal of Physics B: Atomic, Molecular and Optical Physics 51 (3), 034005 (2018).
2018Working PaperJ. Flick, D. Welakuh, M. Ruggenthaler, H. Appel, and A. Rubio, "Light-Matter Response Functions in Quantum-Electrodynamical Density-Functional Theory: Modifications of Spectra and of the Maxwell Equations", (2018), pp. 27.