Anatomy of Two-Loop Effective Action in Noncommutative Field Theories

Details Anatomy of Two-Loop Effective Action in Noncommutative Field Theories Anatomy of Two-Loop Effective Action in Noncommutative Field Theories

2001-10-08

arxiv.org/abs/hep-th/0110066v2

Nucl.Phys. B641 (2002) 256-284

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, Latex, 6 figures using pictex, v2. typos corrected

Scientific paper

10.1016/S0550-3213(02)00589-8

We compute, at two-loop order, one-particle-irreducible Green functions and effective action in noncommutative $\lambda[\Phi^3]_\star$-theory for both planar (g=0, h=3) and nonplanar (g=1, h=1) contributions. We adopt worldline formulation of the Feynman diagrammatics so that relation to string theory diagrammatics is made transparent in the Seiberg-Witten limit. We argue that the resulting two-loop effective action is expressible via open Wilson lines: one-particle-irreducible effective action is generating functional of connected diagrams for interacting open Wilson lines.

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