ar X iv : h ep - t h / 05 06 15 1 v 1 1 7 Ju n 20 05 hep - th / 0506151 Counting Dyons in N = 8 String Theory
نویسندگان
چکیده
A recently discovered relation between 4D and 5D black holes is used to derive exact (weighted) BPS black hole degeneracies for 4D N = 8 string theory from the exactly known 5D degeneracies. A direct 4D microscopic derivation in terms of weighted 4D D-brane bound state degeneracies is sketched and found to agree.
منابع مشابه
ar X iv : h ep - t h / 06 05 27 4 v 1 2 8 M ay 2 00 6 hep - th / 0605274 Metric and coupling reversal in string theory
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متن کاملar X iv : h ep - t h / 06 05 27 4 v 2 1 6 A ug 2 00 6 hep - th / 0605274 Metric and coupling reversal in string theory
Invariance under reversing the sign of the metric G M N (x) and/or the sign of the string coupling field H Universe K contains only F1 and NS5 of IIB and Heterotic SO(32).
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