nLab
NQ-supermanifold

Idea

Another term for dg-manifold .

Definition

Definition (NQP-supermanifold)

An N-supermanifold is a supermanifold equipped with a lift of the ${\mathbb{Z}}_2$-grading to a $\mathbb{N}$-grading through the standard homomorphism $\mathrm{even}/\mathrm{odd}:\mathbb{N}\to {\mathbb{Z}}_2$.

A Q-supermanifold is a supermanifold equipped with an odd-graded vector field $Q$ (i.e. an odd-graded derivation of the algebra of functions) which is homological, i.e. the super Lie bracket with itself vanishes: $[Q,Q]=0$.

A P-supermanifold is a supermanifold equipped with a graded symplectic structure.

Remarks

• It is an old observation by Maxim Kontsevich, amplified by Pavol Severa (ref…) that NQ-supermanifolds are precisely those supermanifolds which are equipped with an action of $\mathrm{End}({ℝ}^{0\mid 1})$, the endomorphism monoid of the odd line.

• NQ-supermanifolds are an equivalent way of thinking of ∞-Lie algebroids. See the list of references there.

Related concepts

• dg-manifold, derived smooth manifold

References

The “Q-manifold”-terminology is due to

• M. Alexandrov, M. Kontsevich, A. Schwarz, O. Zaboronsky, The geometry of the master equation and topological quantum field theory, Int. J. Modern Phys. A 12(7):1405–1429, 1997 (arXiv:hep-th/9502010)