Physicists have built a real-number version of quantum mechanics that makes all the same predictions as the standard theory, ...

Quantum mechanics has long relied on complex numbers to describe the strange behavior of particles, from tunneling to ...

Real and imaginary: The time-dependent Schrödinger equation formulated using complex numbers. (Courtesy: iStock/piranka) Complex numbers are essential to achieve the most accurate quantum-mechanical ...

To a nonmathematician, having the letter "i" represent a number that does not quite exist and is "imaginary" can be hard to wrap your head around. If you open your mind to this way of thinking, ...