Browsing Department of Materials Science and Metallurgy by Subject "black holes in string theory"
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Evanescent ergosurfaces and ambipolar hyperkähler metrics
(SpringerJournal of High Energy Physics, 2016-04-20)A supersymmetric solution of 5d supergravity may admit an ‘evanescent ergosurface’: a timelike hypersurface such that the canonical Killing vector field is timelike everywhere except on this hypersurface. The hyperkähler ...
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Instability of supersymmetric microstate geometries
(SpringerJournal of High Energy Physics, 2016-10-07)We investigate the classical stability of supersymmetric, asymptotically flat, microstate geometries with five non-compact dimensions. Such geometries admit an “evanescent ergosurface”: a timelike hypersurface of infinite ...