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Felino
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Finite subgroups (lattices) in the large N limit of SU(N)
Indeed I am expecting that, generically, the Cayley graph of a discrete subgroup will be an expander graph. But maybe this just happens for certain dimensions of the lattice. One way of rephrasing the question would be: take a discrete subgroup of SU(N) at random, Has it property T? Is it expanding? Do we need large N for this to happen?
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