I am a sophomore (soon to be a junior) physical chemistry major and have been looking into quantum mechanics as a very interesting field that I would like to study in the future. However, all the math involved in the explanations of quantum mechanics seems to be very rigorous (at UCLA functional, real, and complex analysis are all graduate level courses), which left me wondering- how does one actually become a quantum chemist/physicist? It seems like you would need the mathematical knowledge equivalent to having a graduate degree in math, which makes me wonder what the limitations are to having degrees solely in physics/physical chemistry. Is it common for physicists/chemists to degrees in math? Or is all the rigorous math usually handled by mathematicians?