Wall-crossing from supersymmetric galaxies
arXiv:1008.0030 · doi:10.1007/JHEP01(2012)115
Abstract
We give an elementary physical derivation of the Kontsevich-Soibelman wall crossing formula, valid for any theory with a 4d N=2 supergravity description. Our argument leads to a slight generalization of the formula, which relates monodromy to the BPS spectrum.
15 pages