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arXiv · 1907.06500

Effective action of bosonic string theory at order $ \alpha'^2 $

Mohammad R. Garousi
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Abstract

Recently, it has been shown that the gauge invariance requires the minimum number of independent couplings for $B$-field, metric and dilaton at order $\alpha'^2$ to be 60. In this paper we fix the corresponding 60 parameters in string theory by requiring the couplings to be invariant under the global T-duality transformations. The Riemann cubed terms are exactly the same as the couplings that have been found by the S-matrix calculations.

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Mohammad R. Garousi. 2019-07-15. Effective action of bosonic string theory at order $ \alpha'^2 $. https://doi.org/10.1140/epjc%2Fs10052-019-7357-4

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