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Supermultiplet
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==Scalars== A scalar is never the highest component of a superfield; whether it appears in a superfield at all depends on the dimension of the spacetime. For example, in a 10-dimensional N=1 theory the vector multiplet contains only a vector and a [[Majorana–Weyl spinor]], while its dimensional reduction on a d-dimensional [[torus]] is a vector multiplet containing d real scalars. Similarly, in an [[eleven-dimensional supergravity|11-dimensional theory]] there is only one supermultiplet with a finite number of fields, the gravity multiplet, and it contains no scalars. However again its dimensional reduction on a d-torus to a maximal gravity multiplet does contain scalars.
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