This is more of a QFT question, so the moderator may want to move it to another forum. The simplest example of a QFT that I learned was the scalar field; in Sakurai's 1967 text book. I know the Higgs is a J=0 particle. Is it described by the simple scalar field discussed in Sakurai's text? I ask because I hear about the complexity of the Higgs and that there may be up to 5 Higgs bosons. Your thoughts and comments are welcome.