Effective interactions of the open bosonic string via field theory

2024/02/29 by Garozzo, Lucia, Guevara, Alfredo
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2402.19430

Abstract

We describe a method to extract an effective Lagrangian description for open bosonic strings, at zero transcendentality. The method relies on a particular formulation of its scattering amplitudes derived from color-kinematics duality. More precisely, starting from a (DF)² + YM quantum field theory, we integrate out all the massive degrees of freedom to generate an expansion in the inverse string tension α^′. We explicitly compute the Lagrangian terms through O(α^{′ 4}), and target the sector of operators proportional to F⁴ to all orders in α^′.

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