Two-point tree-level string amplitudes as AdS transition amplitudes

2025/05/12 by Pongwit Srisangyingcharoen, Srisangyingcharoen, Pongwit, Jongruk Pukdee +1
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Magnetic confinement fusion research #Particle accelerators and beam dynamics #Physics of Superconductivity and Magnetism

paper · pdf · doi:10.48550/arxiv.2505.07358

openalex publication_date 2025/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We compute the two-point open string and closed string amplitudes at tree level and show that, in a 't Hooft-like limit, they take a form structurally analogous to boundary-to-boundary transition amplitudes of a scalar field in Euclidean AdS space. Interestingly, while both amplitudes yield equivalent expressions, the associated 't Hooft couplings are defined by different worldsheet curvatures-geodesic for the disk and Gaussian for the sphere-suggesting a possible geometric aspect of open/closed string duality.

Citations

• Two-point closed string amplitudes in the BRST formalism
• Supersymmetric Gauge Theories and the AdS/CFT Correspondence
• Large N Field Theories, String Theory and Gravity
• The Large N Limit of Superconformal Field Theories and Supergravity
• Classical and Quantized Tensionless Strings
• A planar diagram theory for strong interactions
• Black Holes and Entropy

Related

• Two-point closed string amplitudes in the BRST formalism
• Building blocks of closed and open string amplitudes
• On the soft limit of tree-level string amplitudes
• Open & Closed vs. Pure Open String Disk Amplitudes
• Open & Closed vs. Pure Open String One-Loop Amplitudes