In my understanding, where the value of a quantum field [i.e. a field with discrete values] is 0 it is said to be in the ground state, and where it is not 0 it is said to be an excitation. Why do we not use the same convention with non-quantum fields [i.e. fields where any real value is possible]. My only guess is that it is very rare for a non-quantum field is to be at exactly 0, so the terminology has no practical use outside of quantum fields.
Asked
Active
Viewed 34 times
