(−1)^F

This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (March 2007)

This article is in need of attention from an expert on the subject. WikiProject Physics or the Physics Portal may be able to help recruit one. (November 2008)

In a quantum field theory with fermions, (−1)^F is a unitary, Hermitian, involutive operator which multiplies bosonic states by 1 and fermionic states by −1. This is always a global internal symmetry of any quantum field theory with fermions and corresponds to a rotation by 2π. This splits the Hilbert space into two superselection sectors. Bosonic operators commute with (−1)^F whereas fermionic operators anticommute with it.

This operator really shows its utility in supersymmetric theories.

This quantum mechanics-related article is a stub. You can help Wikipedia by expanding it.

Hidden categories: Articles lacking sources from March 2007 | All articles lacking sources | Physics articles needing expert attention | Articles needing expert attention from November 2008

stock | retire | vm
Why are we here?
All text is available under the terms of the GNU Free Documentation License
This page is cache of Wikipedia. History

(−1)F

(−1)^F