Comment on "Quantizing strings in de Sitter space"

TL;DR

This paper critiques a previous attempt to quantize strings in de Sitter space, highlighting errors in their solution and emphasizing the need to revisit the problem.

Contribution

It identifies inaccuracies in the prior solution for string quantization in de Sitter space, prompting further investigation.

Findings

The previous solution for string equations of motion in de Sitter space is incorrect.

The problem of string quantization in de Sitter space remains unresolved.

Reassessment of earlier methods is necessary for progress.

Abstract

Trying to quantize the string in a de Sitter spacetime, Miao Li, Wei Song and Yushu Song presents a solution for the string equation of motion (JHEP04(2007)042) that is not correct. This reopens the problem by them addressed.