On critical values of L-functions of potentially automorphic motives
  In this paper we prove a version of Deligne's conjecture for potentially automorphic motives, twisted by certain algebraic Hecke characters. The Hecke characters are chosen in such a way that we can use automorphic methods in the context of totally definite unitary groups. 
Daniel Barrera Salazar and Lucio Guerberoff
math.NT