Infrared fixed point

So imagine you have a toy car that moves really fast, and you want to slow it down so it won't crash into things. One way to do that is to use a brake, which will slow the car down gradually. But what if you want to slow it down really quickly, like with a magic button that instantly stops the car?

Well, scientists have found something similar to that magic button when studying subatomic particles. They've found that sometimes, when particles get very close together, an invisible force kicks in and suddenly slows them down. It's like hitting the brakes on the toy car, but a lot faster.

This invisible force is called an infrared fixed point, and it's like a special point where the particles stop moving so quickly and start interacting differently. Think of it like a traffic light - when the light is red, the cars have to stop and wait. When particles hit an infrared fixed point, they have to stop and interact with each other in a certain way.

Scientists use infrared fixed points to help explain things like how particles interact with each other, and why some things (like magnets) have certain properties. It's a bit complicated, but basically it's like a special button that can change the way particles behave.