I need to write an essay on how quantum gravity might be related to big bang I rather want  to use a string theory approach…if it is possible please use latex form and I don’t mind to use mathematical equations..thanks

•    Here are some good recent references on inflation in string theory: http://arxiv.org/abs/1404.2601 and http://arxiv.org/abs/1306.3512

•    If you want to discuss the big bang singularity, here is a good article to check out: http://arxiv.org/abs/gr-qc/0301001 .

also  http://adsabs.harvard.edu/abs/1989NuPhB.316..391B