ELI5: Explain Like I'm 5

Fujikawa method

Okay, kiddo, let me try to explain this in a way that is easy to understand.

The Fujikawa method is a way of solving problems in physics, which is the science of how things in the world move and interact. When we try to solve problems in physics, we usually use something called equations, which are like special rules that tell us how things work.

But sometimes, these equations are too difficult to use directly, especially when we're dealing with really small things, like atoms and particles. That's where the Fujikawa method comes in.

The Fujikawa method uses something called symmetry, which means that things can look the same even if they're different. For example, your hands are symmetrical - they look pretty much the same even though they're not exactly the same.

In physics, we can use symmetry to simplify the equations we use to solve problems. The Fujikawa method is a way of doing this by looking at how electrons, which are tiny things that carry electricity, move through atoms.

Basically, the Fujikawa method helps us make sense of really complicated physics problems by using symmetry to simplify things. So even though the math can be really hard, the Fujikawa method makes it easier to understand how electrons move through atoms.