Editing Second quantization (section)

== Comment on nomenclature ==
The term "second quantization", introduced by Jordan,<ref name="Todorov2012">{{cite journal
 | author = Todorov, Ivan
 | title = Quantization is a mystery
 | journal = Bulgarian Journal of Physics
 | volume = 39
 | number = 2
 | pages = 107–149
 | arxiv = 1206.3116
 | year = 2012
}}</ref> is a misnomer that has persisted for historical reasons. At the origin of quantum field theory, it was inappositely thought that the [[Dirac equation]] described a relativistic wavefunction (hence the obsolete "Dirac sea" interpretation), rather than a classical spinor field which, when quantized (like the scalar field), yielded a fermionic quantum field (vs. a bosonic quantum field).

One is not quantizing "again", as the term "second" might suggest; the field that is being quantized is not a [[Schrödinger equation|Schrödinger wave function]] that was produced as the result of quantizing a particle, but is a classical field (such as the electromagnetic field or [[Dirac spinor]] field), essentially an assembly of coupled oscillators,  that was not previously quantized. One is merely quantizing each oscillator in this assembly, shifting from a [[Semiclassical physics|semiclassical]] treatment of the system to a fully quantum-mechanical one.