Why is the entry barrier in physics research so high?? When I try to read a research paper to see the latest developments in a particular topics I am always held back by my mathematical abilities. And I don't even think I am mathematically incompetent. I am sure (or certainly hope) I am not the only one facing this. But in any case, does anyone have advice for undergrads, or newly grad students for how to read research papers in physics, given you have not the required mathematical prerequisite knowledge to understand everything in detail? Or if anyone could tell me a the most important mathematical topics after studying which this entry barrier will significantly decrease?