Hey everyone, I've been trying to get a rough idea of what types of classes I should be taking for my upper level undergrad courses, and get an early idea of what type of graduate elective courses I should be taking. I'm a double major in physics and math, and plan to go to grad school for physics. I'm still somewhat undecided on what exactly I want to go into. I'm very deeply interested in cosmology, but lately particle physics and string theory have really been catching my attention. What types of courses would be appropriate as a primer to go into research for string theory? I'm assuming particle physics courses would be my best bet. Yes? What types of fields would be open to me with those interests? Is there any field that meets at the crossroads of string theory/particle physics and cosmology? Are there any other specific classes that I should be taking to prep for study in these fields, or should I just worry about the standard curriculum?