Hello all, My question is really simple. I really like working on problems that involve Nonlinear Dynamics and Chaos, and I also really enjoy fields of Theoretical Physics that probe the nature of reality (quantum mechanics, high energy & elementary particle physics, string theory, etc.) I have the 'crazy' idea that I would really like to work in a field that takes the concepts used in the studies of Nonlinear Dynamics and Chaos and applies them to the sorts of areas of Theoretical Physics that I mentioned, but as of yet I have not been able to find this sort of field. I am sure I am not the first one to think of this, and my primary motivation for this is that I would like to explore the possibilities of fundamental particles (or objects, or pairs of objects) that inherently behave in complex, nontrivial ways (either on their own, or in relation to one another). As I write this, I realize that it may be the case that I simply do not understand theoretical physics enough and that the ideas of Nonlinear Dynamics and Chaos are already in use in Theoretical Physics, but hey that's why I am asking for some direction here. Thinking about this further, I suppose the "strings" of string theory interact in nontrivial ways, but again, I'm asking because I don't know. If anyone knows of a field where Nonlinear Dynamics meets Theoretical Physics, I would be delighted to hear about it. I still have two years until I receive my Bachelors degrees in Mathematics & Physics, so essentially I am looking to apply to a grad program that would combine these two things that I find really exciting. Thank you.