Celestial fields on the string and the Schwarzian action
High Energy Physics - Theory
2021-06-28 v2
Abstract
This paper describes the motion of a classical Nambu-Goto string in three-dimensional anti-de Sitter spacetime in terms of two `celestial' fields on the worldsheet. The fields correspond to retarded and advanced boundary times at which null rays emanating from the string reach the boundary. The formalism allows for a simple derivation of the Schwarzian action for near-AdS2 embeddings.
Cite
@article{arxiv.1910.03610,
title = {Celestial fields on the string and the Schwarzian action},
author = {David Vegh},
journal= {arXiv preprint arXiv:1910.03610},
year = {2021}
}
Comments
29 pages, 4 figures. Minor corrections, appendix added. To appear in JHEP