The  paper of  the  month,  chosen  by  the Editor-in-Chief,  is  "Lorentz transformations in 1 + 1 dimensional spacetime: mainly the superluminal case"  by B.S. Damski;

DOI: 10.12693/APhysPolA.148.22

This paper presents a general view of the Lorentz transformations. It is shown how the standard transformations can be generalized to include all possible inertial observers including those who can move time directions. This is especially important when considering superluminal (faster than light) observers.

The superluminal Lorentz transformations described in the article have already been discussed, however, a new parameterization provides a clear presentation of their properties. The paper includes many
interpretative examples, and offers a fresh perspective on the problem of tachyons, which has recently regained interest in the context of the probabilistic interpretation of quantum mechanics.

I recommend the paper to all physicists interested in fundamental problems of space and time.

The Editor-in-Chief