Abstract
In string theory, an important challenge is to show if the big-bang singularity could be resolved by the higher derivative α′ corrections. In this work, based on the Hohm-Zwiebach action, we construct a series of non-singular non-perturbative cosmological solutions with the complete α′ corrections, for the bosonic gravi-dilaton system. In the perturbative regime, these solutions exactly match the perturbative results given in literature. Our results show that the big-bang singularity indeed could be smoothed out by the higher derivative α′ corrections.
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ArXiv ePrint: 1909.00830
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Wang, P., Wu, H., Yang, H. et al. Non-singular string cosmology via α′ corrections. J. High Energ. Phys. 2019, 263 (2019). https://doi.org/10.1007/JHEP10(2019)263
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DOI: https://doi.org/10.1007/JHEP10(2019)263