Journal
NUCLEAR PHYSICS B
Volume 738, Issue 1-2, Pages 48-75Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysb.2005.12.012
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2-charge D1-D5 microstates are described by geometries which end in 'caps' near r = 0; these caps reflect infalling quanta back in finite time. We estimate the travel time for 3-charge geometries in 4D, and find agreement with the dual CFT. This agreement supports a picture of 'caps' for 3-charge geometries. We argue that higher derivative corrections to such geometries arise from string winding modes. We then observe that the 'capped' geometries have no non-contractible circles, so these corrections remain bounded everywhere and cannot create a horizon or singularity. (c) 2006 Elsevier B.V. All rights reserved.
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