Anti-de Sitter D-branes

Constantin Bachas; Marios Petropoulos

doi:10.1088/1126-6708/2001/02/025

Anti-de Sitter D-branes

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Abstract

We study D-branes of the SL(2, R) WZW model and of its discrete orbifolds. Gluing the currents by group automorphisms leads to three types of D-branes: two-dimensional hyperbolic planes (H₂), de Sitter branes (dS₂), or anti-de Sitter branes (AdS₂). We explain that the dS₂ branes are unphysical, because the electric field on their world-volume is supercritical. By combining SL(2, ℝ) and SU(2), we exhibit a class of supersymmetric AdS₂ × S² three-brane world-volumes, and consider their possible embeddings in the near-horizon region of stringy black holes. We point out the intriguing difference between the induced and the effective geometries of these D-branes, and speculate on its possible significance.

Original language	English
Pages (from-to)	XXXV-32
Journal	Journal of High Energy Physics
Volume	5
Issue number	2
DOIs	https://doi.org/10.1088/1126-6708/2001/02/025
Publication status	Published - 1 Jan 2001

Keywords

Black Holes in String Theory
D-branes

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10.1088/1126-6708/2001/02/025

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AB - We study D-branes of the SL(2, R) WZW model and of its discrete orbifolds. Gluing the currents by group automorphisms leads to three types of D-branes: two-dimensional hyperbolic planes (H2), de Sitter branes (dS2), or anti-de Sitter branes (AdS2). We explain that the dS2 branes are unphysical, because the electric field on their world-volume is supercritical. By combining SL(2, ℝ) and SU(2), we exhibit a class of supersymmetric AdS2 × S2 three-brane world-volumes, and consider their possible embeddings in the near-horizon region of stringy black holes. We point out the intriguing difference between the induced and the effective geometries of these D-branes, and speculate on its possible significance.

KW - Black Holes in String Theory

KW - D-branes

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DO - 10.1088/1126-6708/2001/02/025

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VL - 5

SP - XXXV-32

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 2

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Anti-de Sitter D-branes

Abstract

Keywords

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