Multiplet

<p>In <a href="/facts/Physics/a7aH2y08">physics</a> and particularly in <a href="/facts/Particle_physics/YgIuyj2t">particle physics</a>, a multiplet is the <a href="/facts/Quantum_state_space/0tHWY1Bw">state space</a> for 'internal' <a href="/facts/Degrees_of_freedom_(physics_and_chemistry)/Rrjl0lnq">degrees of freedom</a> of a <a href="/facts/Subatomic_particle/tMEzcTWQ">particle</a>; that is, degrees of freedom associated to a particle itself, as opposed to 'external' degrees of freedom such as the particle's position in space. Examples of such degrees of freedom are the <a href="/facts/Spin_(physics)/4Jvp7e8P">spin state</a> of a particle in <a href="/facts/Quantum_mechanics/BRc3Mzgr">quantum mechanics</a>, or the <a href="/facts/Color_charge/aWS1xsCR">color</a>, <a href="/facts/Isospin/mnksCIaP">isospin</a> and <a href="/facts/Hypercharge/XUzPvr99">hypercharge</a> state of particles in the <a href="/facts/Standard_Model/LhVGf9ow">Standard Model</a> of particle physics. Formally, we describe this state space by a <a href="/facts/Vector_space/M1pxMLx2">vector space</a> which carries the action of a group of continuous symmetries.
</p>

Multiplet open-in-new

Multiplet