|Speaker:||Wu-yen Chuang (National Taiwan University)|
|Title:||BPS State Wallcrossing and ADHM Sheaf Theory (Part I)|
|Date (JST):||Mon, Feb 06, 2012, 14:00 - 15:00|
|Place:||Seminar Room A|
In the first part of the talk I will review the physics of D-brane BPS state counting, stability condition and wallcrossing. The physics derivation of the wallcrossing formulas will also be discussed. After that I will specialize to the geometry where quiver description is available and discuss theta stability condition, stable representations and mutations.