{ "id": "1209.0438", "version": "v4", "published": "2012-09-03T19:16:48.000Z", "updated": "2014-06-06T18:47:13.000Z", "title": "An Alexandrov-Fenchel-type inequality in hyperbolic space with an application to a Penrose inequality", "authors": [ "Levi Lopes de Lima", "Frederico GirĂ£o" ], "comment": "18 pages; no figures; the proof of Proposition A.1 has been rewritten", "categories": [ "math.DG", "gr-qc" ], "abstract": "We use the inverse mean curvature flow to prove a sharp Alexandrov-Fenchel-type inequality for star-shaped, strictly mean convex hypersurfaces in hyperbolic $n$-space, $n\\geq 3$. As an application we establish, in any dimension, an optimal Penrose inequality for asymptotically hyperbolic graphs carrying a minimal horizon, with the equality occurring if and only if the graph is an anti-de Sitter-Schwarzschild solution. This sharpens previous results by Dahl-Gicquaud-Sakovich and settles, for this class of initial data sets, the conjectured Penrose inequality for time-symmetric space-times with negative cosmological constant.", "revisions": [ { "version": "v4", "updated": "2014-06-06T18:47:13.000Z" } ], "analyses": { "subjects": [ "53C42", "53C44", "53C21", "53C80" ], "keywords": [ "hyperbolic space", "application", "inverse mean curvature flow", "strictly mean convex hypersurfaces", "anti-de sitter-schwarzschild solution" ], "publication": { "doi": "10.1007/s00023-015-0414-0" }, "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1184163, "adsabs": "2012arXiv1209.0438L" } } }