Talk:Four-fermi interaction

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This entire article is crap. These are not four-fermion interactions. They are quartic in the fermion operators but they represent only two-body interactions. The diagrams they correspond to have only two fermions at any given time. If you draw a time-ordered diagram, a horizontal line will only cross two fermion lines in the bare interaction.

Renormalized Hamiltonians create effective interactions which are potentially N-body, but this is not what this article is talking about. Whoever made up this article is an idiot.

These kinds of interactions are generally called four-fermion interactions.
Name-calling is not only unconstructive, it also reflects poorly on the name-caller.

"In modern English usage, the terms "idiot" and "idiocy" describe an extreme folly or stupidity..." [Wikipedia: idiot]. Since it is my claim that this article represents extreme folly and stupidity, my comments were not name calling but rather a reasonable use of the modern English language. These interactions may generally be called four-fermion interactions but that does not make it a correct term. The truth is that there are no bare four fermion interactions anywhere in currently known physics and this article contains bad information and perpetuates ignorance.