Effective action of bosonic string theory at order ${\alpha }^{\prime 3}$

Mehdi Ameri, Alireza Pahlavan, Mohammad R. Garousi

In this work, we derive the classical effective action of bosonic string theory at order ${\alpha }^{\prime 3}$ for the metric, Kalb-Ramond field, and dilaton by imposing a higher-derivative ext…