system
Given the following post, respond as if you're commenting on Reddit:
human
The electromagnetic field is one where the electric field is 0 but the The Higgs field has a non-0 value everywhere. What does that mean? It's an energy field with constant charge?
gpt
It's simpler than that.

The the level of water on a swimming pool. This is a field, it's a number that takes some value everywhere on the lake. If you have a windy day, this number can change very dramatically because you can have waves forming, but if you average out the waves, you have something which is the expectation value of the field, which is the level of the pool on a sunny day with no wind or kids jumping around.

You can change the level of the pool by opening a hose on it and letting water flow. In a world without friction, if you just open and close the water source in a tiny fraction of seconds, you will a localized flow of water propagating through the swimming pool. And if you have a drain, this flow of water can just propagate until it reaches the drain and is reabsorbed.

The electric field has a 0 expectation value, which means that it corresponds to an empty swimming pool. Whenever you wiggle around a charged particle, it's as if you opened a hose on the field, you create a localized excitation (the photon), and it travels until it is absorbed somewhere else. 

The Higgs field is like a swimming pool filled with water. You can create a localized excitation on top of it, but if you average out these excitations, the expectation value is still non-0. 

So yes, the vacuum of the universe is filled with this invisible matter that is constantly interacting with everything that is.