Hi, my main interest is having it peer reviewed.
I managed to have three people having a look at it, Finally.
2 of them are related to academia, a physicist working on solid state physics, a mathematician, working in stuff I can hardly comprehend, and a physicist doing consultancy.
Unfortunately, their knowledge related to this field is kind of tangential, their opinion is that the maths are strong, but they are not sure of the physics.
I assumed that to have it peer reviewed, I needed to try to publish, at least it was like such back then, you had colleagues commenting on your work, but peer reviewing was for publication, also back then, you used to publish much less, reserved for more impactful results.
I didn't want to ask for more favours to them, given that this is not their field, but I have uploaded the manuscript to Zenodo, so the solid state physicist can show it to colleagues in her department.
I will try to update this from time to time, so it may help other people in the same situation. If it passes the filters, I will publish the link, otherwise I will explain where it failed. If that is not allowed, this forum looks very moderated, say so.
Thanks, your discussion adds clarity about what is the relative position of the different actors.