# Are nonperturbative AdS vacua possible in bosonic string theory?

## TL;DR

This paper investigates the potential existence of nonperturbative AdS vacua in bosonic string theory, considering all alpha' corrections, and explores the coexistence of AdS and dS vacua.

## Contribution

It demonstrates that nonperturbative AdS vacua can exist in bosonic string theory when all alpha' corrections are included, extending previous perturbative analyses.

## Key findings

- Nonperturbative AdS vacua are possible in bosonic string theory.
- All alpha' corrections are crucial for the existence of these vacua.
- Coexistence of nonperturbative dS and AdS vacua is discussed.

## Abstract

In this paper, following the work of Hohm and Zwiebach [arXiv:1905.06583], we show that in bosonic string theory nonperturbative anti-de Sitter (AdS) vacua could exist with all $\alpha^{\prime}$ corrections included. We also discuss the possibility of the coexistence of nonperturbative dS and AdS vacua.