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Abstract |
I will present a new class of brane-antibrane bound states in type IIB string
theory. These configurations appear as regular bound states of two Strominger-
Vafa black holes, one BPS and one anti-BPS, held apart by a regular topological
structure. In the neutral, asymptotically flat case, I will show that these
solutions capture atypical microstates of the Schwarzschild black hole,
accounting for half of its entropy. This provides a concrete microscopic
realization of Schwarzschild entropy in terms of branes and antibranes. I will
then consider the AdS3 embedding, where these bound states form a large,
discrete family of non-BPS states with a quantized energy spectrum determined
entirely by the number of antibranes and antimomenta. I will show that regular
solutions exist with energy below the CFT mass gap and discuss their physical
properties and implications. |
