I would like to know the reason why the local field Q_l is not an etale sheaf over a scheme X while its ring of integers Z_l can be regarded as a constant etale sheaf?
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1$\begingroup$ I sort of answered this: mathoverflow.net/questions/83569/… $\endgroup$– Ryan ReichCommented Jun 11, 2012 at 2:25
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$\begingroup$ I don't understand. You can make an étale sheaf out of any group. $\endgroup$– S. Carnahan ♦Commented Jun 11, 2012 at 10:03
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