Missing Yang-Mills instantons on ALE spaces
نویسنده
چکیده
We derive an expression for the dimension of the moduli space of SU(n) kinstantons on an r-centred ALE metric in terms of the triple (n, k, r). It is shown that if k mod r > n then no k-instantons exist. This implies that the corresponding Higgs branch of vacua representing marginally bound Dp-D(p+4) branes on an ALE background is zero dimensional.
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