Observation of subluminal twisted light in vacuum: comment
arXiv:1610.01082
Abstract
Our analysis based on analytical and numerical calculations leads to conclusion that the promising results obtained in [F. Bouchard, J. Harris, H. Mand, R. W. Boyd, and E. Karimi, Optica 3, 351, 2016] are questionable in several respects.
3 pages, 1 figure. Accepted for publication. 1 reference and one short paragraph (before the penultimate paragraph) has been added