ELI5: Explain Like I'm 5

Lattice gauge theory

Lattice gauge theory is a way of studying how subatomic particles interact with each other. It's like playing with a toy building set where you can see how different pieces fit together.

Imagine you have a bunch of tiny balls, and each ball represents a particle. These particles are held together by forces called "gauge fields." These fields are kind of like invisible strings that connect the particles.

Now, imagine you want to study how these particles behave when they're squeezed really close together. You could try to observe them under a microscope, but they're too small to see. So instead, you can use a computer simulation.

In this simulation, you create a "lattice" of imaginary points that represent the space where the particles exist. Think of this lattice like a big grid, where you can place the particles at different points.

Then, you use mathematical equations to calculate how the particles interact with each other, based on the positions of the particles and the strength of the gauge fields. This is like putting together a puzzle, where you have to figure out which pieces fit together to create the right picture.

The lattice gauge theory simulation allows scientists to study how particles behave in extreme conditions, like when they're compressed into a very small space. This can help them better understand the behavior of particles in the universe, from the smallest atoms to the largest stars.