Comment on "Electron mass renormalization and absorption of hard photons" by E. Pourjafarabadi and A. Mojavezi.

The article discusses a paper published by E. Pourjafarabadi and A. Mojavezi in 2022, which claims to present a new mechanism for gamma-ray absorption by heavy electrons. However, the article points out that the paper does not actually describe this mechanism and fails to acknowledge the prior work of Widom and Larsen, who have already described such a mechanism. Widom and Larsen's work involves the absorption of hard gamma photons by heavy-mass surface plasmon polariton (SPP) electrons. The authors of the article argue that Pourjafarabadi and Mojavezi have not provided a novel mechanism, but have instead discussed the mass renormalization process described by Widom and Larsen. [Extracted from the article]