Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP08(2018)204
Keywords
AdS-CFT Correspondence; Long strings
Categories
Funding
- NSF [PHY-1214302, PHY-1620039]
- Israeli Science Foundation Center of Excellence
- I Core Program The Quantum Universe - Planning and Budgeting Committee
- Israeli Science Foundation
- EPSRC program grant New Geometric Structures from String Theory [EP/K034456/1]
- STFC grant [ST/L00044X/1]
- EPSRC [EP/K034456/1] Funding Source: UKRI
- STFC [ST/P000762/1] Funding Source: UKRI
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We study superstring theory in three dimensional Anti-de Sitter spacetime with NS-NS flux, focusing on the case where the radius of curvature is equal to the string length. This corresponds to the critical level k = 1 in the formulation as a Wess-Zumino-Witten model. Previously, it was argued that a transition takes place at this special radius, from a phase dominated by black holes at larger radius to one dominated by long strings at smaller radius. We argue that the infinite tower of modes that become massless at k = 1 is a signal of this transition. We propose a simple two-dimensional conformal field theory as the holographic dual to superstring theory at k = 1. As evidence for our conjecture, we demonstrate that our putative dual exactly reproduces the full spectrum of the long strings of the weakly coupled string theory, including states unprotected by supersymmetry.
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