THE INTERSECTION MOTIVE OF THE MODULI STACK OF SHTUKAS

Abstract

For a split reductive group $G$ over a finite field, we show that the intersection (cohomology) motive of the moduli stack of iterated $G$-shtukas with bounded modification and level structure is defined independently of the standard conjectures on motivic $t$-structures on triangulated categories of motives. This is in accordance with general expectations on the independence of $\ell$ in the Langlands correspondence for function fields.

Keywords

• 20G05
• 14M15
• 19E15