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Six Open String Disk Amplitude in Pure Spinor Superspace
Open String Disk Amplitude Pure Spinor Superspace
2010/12/23
The tree-level amplitude of six massless open strings is computed using the pure spinor formalism. The OPE poles among integrated and unintegrated vertices can be efficiently organized according to th...
Effective Polyakov-loop theory for pure Yang-Mills from strong coupling expansion
Effective Polyakov-loop theory Yang-Mills
2011/1/6
Lattice Yang-Mills theories at finite temperature can be mapped onto effective 3d spin systems, thus facilitating their numerical investigation. Using strong-coupling expansions we derive effective ac...
Study of pure annihilation decays Bd,s→D0D0
perturbative QCD approach B meson CP violation
2009/8/14
Within the heavy quark limit and the hierarchy approximation λQCD<< mD<ur purely via annihilation type diagrams. As a rough estimate, we calcula...