In this paper, we present a purely algebraic formulation of higher gauge theory and gauged sigma models based on the abstract theory of graded commutative algebras and their morphisms. The formulation incorporates naturally Becchi - Rouet -Stora - Tyutin (BRST) symmetry and is also suitable for Alexandrov - Kontsevich - Schwartz-Zaboronsky (AKSZ) type constructions. It is also shown that for a full-fledged Batalin-Vilkovisky formulation including ghost degrees of freedom, higher gauge and gauged sigma model fields must be viewed as internal smooth functions on the shifted tangent bundle of a space-time manifold valued in a shifted -algebroid encoding symmetry. The relationship to other formulations where the -algebroid arises from a higher Lie groupoid by Lie differentiation is highlighted.
REFERENCES
Here and in the following, we distinguish notationally between an arbitrary chosen but fixed morphism and the variable .
-linearity is here conventionally defined as the property that and with and .
Here, is the sheaf of smooth realvalued functions on a smooth manifold N and S(E) is the graded symmetric algebra of a graded vector space E. See the cited references for further details.
Here and in the following, we denote by the space of sections of a vector bundle V.
For any integer k and any two graded vector spaces V, W, is the set of all degree k linear mappings . Notice that . Usually, one writes .
Recall that for a graded vector space V, is a graded vector space with . Further, the duality pairing of V, pairs Vk and .