Weakly Coupled Analysis of BPS States and Supertubes in String Theory

Explore a 56-minute lecture by Stefano Massai from Padua University at the Galileo Galilei Institute. Delve into advanced topics in string theory and supersymmetry, covering weakly coupled analysis, classical islands, and symmetric orbifold BPS states. Learn about circular supertubes, closed string spectrum, and 1/4 BPS vertex operators. Examine three-charge supertubes and perturbations of both 1/4 BPS and non-supersymmetric backgrounds. Gain insights into stringy BPS vertex operators and conclude with a comprehensive recap of the discussed concepts.

Introduction
Weakly coupled analysis
Classical islands
Symmetric orbifold BPS states
Circular supertube
A well known cap
Closed string spectrum
1/4 BPS vertex operators
Three-charge supertubes
1/4 BPS perturbations of 1/4 BPS backgrounds
Stringy BPS vertex operators
Perturbations of non-susy background
Recap