Two non-perturbativeα'or loop corrected string cosmological solutions  

作　　者：宋丽 陈德友 Li Song;Deyou Chen(College of Physics,Sichuan University,Chengdu 610065,China;School of Science,Xihua University,Chengdu 610039,China)

机构地区：[1]College of Physics,Sichuan University,Chengdu 610065,China [2]School of Science,Xihua University,Chengdu 610039,China

出　　处：《Chinese Physics C》2023年第9期140-144,共5页中国物理C（英文版）

基　　金：supported by the Sichuan Science and Technology Program(2022YFG0317);supported by the Tianfu talent plan and FXHU.

摘　　要：In this paper,we present two non-perturbative string cosmological solutions without curvature singularities for the bosonic gravi-dilaton system.These solutions are general in that they can straightforwardly match the perturbative solution to arbitrarily high orders in the perturbative region.The first solution includes non-perturbative α’corrections based on Hohm-Zwiebach action.We then use the simple phenomenological map between the α’ and loop corrected theories in string cosmology to construct a non-perturbative loop corrected non-singular solution.Both solutions are non-singular everywhere.Therefore,the pre-and post-big-bangs are smoothly connected by these solutions.

关 键 词：Hohm-Zwiebach action string cosmological solutions regular solutions 

分 类 号：P159[天文地球—天文学]