String Amplitudes from Moyal String Field Theory

Details String Amplitudes from Moyal String Field Theory String Amplitudes from Moyal String Field Theory

2002-11-14

arxiv.org/abs/hep-th/0211131v4

Phys.Rev. D67 (2003) 066002

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, LaTeX, typos corrected, comments added, Eqs.(27-32)(55-59) added. Eq.(27) includes a more explicit result of the fou

Scientific paper

10.1103/PhysRevD.67.066002

We illustrate a basic framework for analytic computations of Feynman graphs using the Moyal star formulation of string field theory. We present efficient methods of computation based on (a) the monoid algebra in noncommutative space and (b) the conventional Feynman rules in Fourier space. The methods apply equally well to perturbative string states or nonperturbative string states involving D-branes. The ghost sector is formulated using Moyal products with fermionic (b,c) ghosts. We also provide a short account on how the purely cubic theory and/or VSFT proposals may receive some clarification of their midpoint structures in our regularized framework.

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