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arXiv · 1909.00830

Non-singular string cosmology via $α^{\prime}$ corrections

Peng Wang·Houwen Wu·Haitang Yang·Shuxuan Ying
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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 formula, we construct a series of non-singular non-perturbative cosmological solutions with the complete $α^{\prime}$ 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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Peng Wang, Houwen Wu, Haitang Yang, Shuxuan Ying. 2019-10-09. Non-singular string cosmology via $α^{\prime}$ corrections. https://doi.org/10.1007/jhep10(2019)263

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