Quantum field theory

Quantum field theory is a way to understand how tiny particles like electrons and quarks behave. It suggests that these particles are not just tiny dots but are actually waves or vibrations in invisible fields that fill space. These fields can act like both particles and waves, and they interact with each other in complex ways. Quantum field theory is very good at predicting how these particles behave, but it also raises interesting questions about reality, like how particles can appear and disappear briefly from empty space. It's a key part of modern physics, helping us understand the universe at its most basic level.