Non-singular string cosmology via $\alpha^{\prime}$ corrections
High Energy Physics - Theory
2019-10-30 v3 General Relativity and Quantum Cosmology
Abstract
In string theory, an important challenge is to show if the big-bang singularity could be resolved by the higher derivative corrections. In this work, based on the Hohm-Zwiebach formula, we construct a series of non-singular non-perturbative cosmological solutions with the complete 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 corrections.
Keywords
Cite
@article{arxiv.1909.00830,
title = {Non-singular string cosmology via $\alpha^{\prime}$ corrections},
author = {Peng Wang and Houwen Wu and Haitang Yang and Shuxuan Ying},
journal= {arXiv preprint arXiv:1909.00830},
year = {2019}
}
Comments
V2: 12 pages, 6 figures, references added, V3: typos corrected in equations (3.21) and (3.22), references added, version to appear in JHEP