most recent 30 from http://mathoverflow.net 2013-05-20T12:03:44Z http://mathoverflow.net/feeds/user/27994 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/111868/the-use-of-hall-algebras-in-physics/112030#112030 Daniel Persson 2012-11-10T21:56:08Z 2012-11-10T21:56:08Z

<p>Let me add a small comment to Jeff Harvey's nice answer. Some years after the original BPS-algebra papers of Harvey-Moore, there was a paper by Fiol-Marino, hep-th/0006189, which analyzed the algebra of BPS-states for local compactifications where the BPS-states can be described by quivers. They gave a rather explicit realization of Harvey and Moore's "correspondence conjecture", and they also noted that the algebra of BPS-states is essentially that of a Ringel-Hall algebra. </p>