The existence of non-trivial, i.e., non-Einstein, Ricci solitons on fourdimensional Lorentzian generalized symmetric spaces is proved. Moreover, it is shown that only steady Ricci solitons can be gradient.
Ibrar HussainTahirullahSuhail Khan
D. N. OskorbinE.D. RodionovИ.В. Эрнст