>>12968814>What is being excited when you talk about a field excitation? The field, it is no longer the lowest energy configuration
>If a field is described by a wave equation or simple harmonic oscillators, what's doing the oscillating?Don't think of fields that way. Get used to the mathematical description of fields. What is doing the oscillating are interactions with other fields or particles. It depends what the field is so what can interact with it, but if we are talking about electromagnetic field then interactions with charges
