I'm writing my PhD-thesis in economics at a fairly small university. Accordingly, there are relatively few scientists in my department. I am planning to write a research paper on a specific topic that nobody else at my university is researching. However, I think that it makes sense to write this paper with several people so that the expertise of others can also be included in this study (and many more reasons).

My question now is where I can find other researchers on this topic. Is there a "Facebook" for researchers? And how can I contact them?

I would also be pleased if someone would tell me about their experience on this problem.