UV/IR Mixing via Closed Strings and Tachyonic Instabilities

Armoni, Adi; Lopez, Esperanza

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UV/IR Mixing via Closed Strings and Tachyonic Instabilities

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Lopez, Esperanza
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Armoni, A., & Lopez, E. (2002). UV/IR Mixing via Closed Strings and Tachyonic Instabilities. Nuclear Physics B, 632(1-3), 240-256.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-5452-5

Abstract

We discuss UV/IR mixing effects in non-supersymmetric non-commutative U(N) gauge theories. We show that the singular (non-planar) terms in the 2- and 3-point functions, namely the poles and the logarithms, can be obtained from a manifestly gauge invariant effective action. The action. which involves open Wilson line operators, can be derived front closed strings exchange between two stacks of D-branes. Our concrete example is type 0B string theory and the field theory that lives on a collection of N electric D3-branes. We show that one of the closed string modes that couple to the field theory operator which is responsible for the infrared poles, is the type 0 tachyon