Relativistic Quantum Mechanics

Relativistic Quantum Mechanics combines principles of Einstein's relativity (objects change as they approach light speed) and Quantum Mechanics (rules dictating behavior particles at subatomic level). It describes how tiny particles moving at near-light speeds interact with each other and their environment. This understanding can change when we factor in huge speed or energy, which conventional Quantum Mechanics doesn't cover. These theories are critical for advancements in particle physics and string theory, which seek to explain the very fabric of our universe.