Hey I'm the scheduled guest for the june 14th Physics AMA and I was told to maybe make a little presentation and asks for any questions for the AMA people might have, so here it is.
So I am Samuel Lereah, got a Master degree in particle physics from the university of Nantes. My master thesis was on the topic of non-relativistic path integrals in Riemannian spaces, focused on the problem of operator ordering (with stochastic integrals, phase space quantization and those kind of things). Currently not working in the field of physics (due to job market troubles), but in softwares, but I am still very much so into doing physics as a hobby (I am also still looking to do a PhD, if anyone has some to offer!).
My interests are mainly in general relativity and quantum field theory. I quite like odd topics in those fields and the AMA will be about causality in physics, mostly on the topic of spacetimes with closed timelike curves (ie time machines, for a more casual term). Probably something along the lines of a general outline of the history of the topic, some important theorems, the behaviour of matter in such spacetimes and the many limitations preventing them from occuring.
So if you have any questions on that topic you'd like me to answer during this AMA feel free to ask in this thread and I'll do my best to try to answer it.
Time and date
The AMA will be on tuesday june 14 at 16:00 UTC, in the Physics Stack Exchange chatroom, the h-bar.