2020/05/31 by Emil J. Martinec, Stefano Massai, David Turton · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Decoupling (probability) #Duality (order theory) #Quantum Chromodynamics and Particle Interactions #Sigma model #String (physics) #String duality #String theory #Supergravity #Superpotential #Worldsheet #hep-th
paper · pdf · doi:10.1007/jhep12(2020)135
published as JHEP 2012 (2020) 135 · 65 pages, 12 figures. v2: minor corrections
openalex created_date 2020/06/05 · arxiv created 2020/09/28 · openalex publication_date 2020/12/01 · arxiv updated 2021/01/05 · openalex updated_date 2026/08/05
A bstract We explore the stringy structure of 1/2-BPS bound states of NS fivebranes carrying momentum or fundamental string charge, in the decoupling limits leading to little string theory and to AdS 3 / CFT 2 duality. We develop an exact worldsheet description of these states using null-gauged sigma models, and illustrate the construction by deriving the closed-form solution sourced by an elliptical NS5-F1 supertube. The Calabi-Yau/Landau-Ginsburg correspondence maps this geometrical worldsheet description to a non-compact LG model whose superpotential is determined by the fivebrane source configuration. Singular limits of the 1/2-BPS configuration space result when the fivebrane worldvolume self-intersects, as can be seen from both sides of the CY/LG duality — on the Landau-Ginsburg side from the degeneration of the superpotential(s), and on the geometrical side from an analysis of D-brane probes. These singular limits are a portal to black hole formation via the condensation of the branes that are becoming massless, and thus exhibit in the gravitational bulk description the central actors in the non-gravitational dual theory underlying black hole thermodynamics.