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Small Black Hole Constituents and Horizontal Symmetry

By Anna Ceresole, Sergio Ferrara, Alessio Marrani and Armen Yeranyan


By exploiting the role of the horizontal symmetry SL(2,R), we extend the analysis and classification of two-centered extremal black hole charge configurations to the case of "small" single-centered constituents. These latter are seen to decrease the number of independent horizontal-invariant polynomials from four to one, depending on the rank of the charge orbit supporting each of the two centers. Within U-duality groups of type E7, both reducible and irreducible symmetric supergravity models in four space-time dimensions are considered, thus encompassing N = 2 and N = 8 theories.Comment: 1+24 pages, 3 Table

Topics: High Energy Physics - Theory
Year: 2011
DOI identifier: 10.1007/JHEP06(2011)078
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