A computational physicist applies numerical analysis to solve problems or support theories in physics. In this career, you use knowledge from numerous disciplines, including physics, statistics, mathematics, and computer science, to test a theory. You use algorithms and other methodological tools to crunch large datasets using powerful computers, which helps in solving differential equations and other statistical problems. This can include Monte Carlo calculations and eigenvalue problems. Some people consider computational physics a branch of theoretical physics or its own discipline with specific duties and responsibilities.