Today, I made a serious mistake. I have sent again a rejected paper to the same journal. The point is that this is the kind of journal that has several Editors that can manage papers. So, one could improperly think that a rejected paper sent to different Editors could in the end go through. The Editor that received my paper did not even think to an error and called for a bad practice warning the Editor in Chief of the journal.
I never applied this practice. The reason is that I have currently about 70 papers published in peer-reviewed journals and so, I have the greatest respect for the work of people that permitted to achieve this result of mine. Worst, I have written more than one hundred papers and a part of them is unpublished for a reason or the other and generally I am in difficulty to get trace of all of this. Indeed, it is quite common practice to send a rejected paper to another journal. The paper I sent out was written about three years ago and I have forgotten about it. In these day, I am revisiting my computations on the scalar field theory both classically and quantum and turned back to this article. Wrongly, I thought I had not sent it to this journal before and that is it.
American Physical Society obviated to this problem by producing a database, available to authors, with all their history. In other cases this is practically impossible to trace and when the number of papers is overwhelming an error can occur. So, my apologize for this and I do it publicly.