BPS spectrum of Argyres-Douglas theory via spectral network

Abstract: We study the BPS spectrum of four-dimensional N = 2 superconformal field theory of Argyres-Douglas type, obtained via twisted compactification of six-dimensional AN−1 (2, 0) theory on a sphere with an irregular puncture, by using spectral networks. We give strong evidence of the equivalence of N = 2 superconformal field theories from six-dimensional theories of different ranks by systematically comparing the chamber structure and wall-crossing phenomena