I have not yet contacted any experts on my topic. For research purposes, I honestly prefer to learn from reading than from people. I do, however, have some ideas on people to contact once I have developed a concrete direction to point a potential conversation in.
John Forbes Nash, Jr. is a professor at Princeton University of differential geometry, game theory, and cosmology, among other topics.
Professor Kevin Corlette of the University of Chicago also teaches differential geometry.
N. J. Wildberger of the University of New South Wales has an active Youtube channel listed in my sources where he can be contacted.
All (surviving) authors of books I am reading are also potential experts to contact.