Wheeler-DeWitt Equation

The Wheeler-DeWitt equation is a fundamental equation in quantum gravity that combines principles of quantum mechanics and general relativity. It describes the quantum state of the entire universe, capturing how its shape and fabric evolve at the smallest scales. Unlike typical equations that depend on time, the Wheeler-DeWitt equation suggests that, at the most fundamental level, the universe's quantum state is timeless, reflecting a deep and complex interplay between gravity and quantum phenomena. It’s a key step toward understanding how the universe works at its most fundamental, microscopic level.