Supergravity Description of Non-BPS Branes
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We construct supergravity solutions that correspond to N Dp-branes coinciding with \bar{N} \bar{Dp}-branes. We study the physical properties of the solutions and analyse the supergravity description of tachyon condensation. We construct an interpolation between the brane-antibrane solution and the Schwarzschild solution and discuss its possible application to the study of non-supersymmetric black holes.
30 pages, Latex, 5 figures, Discussion of non-BPS D-instantons added, ref. added
30 pages, Latex, 5 figures, Discussion of non-BPS D-instantons added, ref. added