Let K be a quadratic imaginary field, bfn an ideal in the ring of integers
calOK and xi an algebraic Hecke character of type (A0) for the modulus bfn. One knows (from Weil) that there exists a number field E=ExisupseteqK with the property that xi takes values in Etimes.
Let p be a prime that splits in K. Consider the following condition: there exists an unramified place vmidp in E with residue field kv=BbbFp such that xi takes values in the group of v-units in E.
The condition implies the existence of a p-adic avatar of xi with values in BbbZtpimes.
I would like to know:
1) to the best of your knowledge, has been this condition considered somewhere? does it have a "name"?
2) I'm tempted to say that xi is p-split if the condition is satisfied (and that v splits xi). Would this name conflict with other situations that I should be aware of?
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