RT Journal Article T1 Conformally Einstein Lorentzian Lie groups: the non-solvable case A1 Calviño Louzao, Esteban A1 García Río, Eduardo A1 Gutiérrez Rodríguez, Ixchel Dzohara A1 Vázquez Lorenzo, Ramón K1 Conformally Einstein K1 Bach tensor K1 C-space K1 Lie group AB We describe all left-invariant Bach-flat Lorentz metrics on non-solvable four-dimensional Lie groups, showing that they are conformally Einstein if and only if they are locally conformally flat. As a consequence we show the existence of strictly Bach-flat left-invariant metrics on SU(2)xR whose restriction to SU(2) may be positive definite, Lorentzian or degenerate. PB Springer-Verlag SN 0938-8974 YR 2025 FD 2025-07-07 LK https://hdl.handle.net/10347/42405 UL https://hdl.handle.net/10347/42405 LA eng NO Calviño-Louzao, E., García-Río, E., Gutiérrez-Rodríguez, I. et al. Conformally Einstein Lorentzian Lie Groups: The Non-solvable Case. J Nonlinear Sci 35, 86 (2025). https://doi.org/10.1007/s00332-025-10183-2 NO Supported by Grants ED431F 2020/04, ED431C 2023/31 (Xunta de Galicia, Spain) and PID2021-127075NA-I00, PID2022-138988NB-I00 funded by MICIU/AEI/10.13039/501100011033 and by ERDF, EU. DS Minerva RD 24 abr 2026