searchlogic to check whether two arrays intersect

How can I use searchlogic to check whether two arrays intersect? I have User.array_1 and the search criteria are in Search.array_2. I want to search for all users whose has an array_1 that intersects with Search.array_2 . That is where (user.array_1 & search.array_2) != nil . How can I do this with searchlogic? Thanks.