Flat Z-graded connections and loop spaces

The pull back of a flat bundle $E\rightarrow X$ along the evaluation map $π: \mathcal{L} X \to X$ from the free loop space $\mathcal{L} X$ to $X$ comes equipped with a canonical automorphism given by the holonomies of $E$. This construction naturally generalizes to flat $\mathbb{Z}$-graded connections on $X$. Our main result is that the restriction of this holonomy automorphism to the based loop space $Ω_* X$ of $X$ provides an $A_\infty$ quasi-equivalence between the dg category of flat $\mathbb{Z}$-graded connections on $X$ and the dg category of representations of $C_\bullet(Ω_* X)$, the dg algebra of singular chains on $Ω_* X$.

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