✎ The Coleman-Mandula Theorem [The Physics Travel Guide]

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====== The Coleman-Mandula Theorem ======

<note tip>
Explanations in this section should contain no formulas, but instead colloquial things like you would hear them during a coffee break or at a cocktail party.
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<tabbox Concrete>

* {{ :theorems:colemanmandula.pdf |The Coleman-Mandula Theorem}} by Sascha Leonhardt
 
<tabbox Abstract>

**Loopholes**

* For a nice discussion, see Section 5.2 "Living without Supersymmetry" in [[http://archiv.ub.uni-heidelberg.de/volltextserver/23860/1/New%20Symmetry%20Concepts%20for%20Spacetime%20and%20Unification.pdf|New Symmetry Concepts for Spacetime and Unification]] by Sebastian Ohmer.

<blockquote>There are also symmetries that are not captured by the theorem at all. These symmetries
are for example discrete symmetries and spontaneously broken symmetries. The latter being
symmetries that do not act on the S-matrix level and therefore evading the requirement to
commute with S. Rather, these symmetries are symmetries of the action of the theory and are
spontaneously broken before any calculation.<cite>{{ :theorems:colemanmandula.pdf |The Coleman-Mandula Theorem}} by Sascha Leonhardt</cite></blockquote>
<tabbox Why is it interesting?> 
The Coleman-Mandula theorem is often invoked as a motivation for Supersymmetry.

/*<tabbox FAQ>*/

/*<tabbox History>*/

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