Work

Bulk reconstruction in de Sitter spacetime

Year: 2025

Type: article

Abstract: The bulk reconstruction program involves expressing local bulk fields as non-local operators on the boundary. It was initiated in the context of AdS/CFT correspondence. Attempts to extend it to de Sitter have been successful for heavy(principal series) scalar fields. For other fields, the construction ran into issues. In particular, divergences were found to appear for higher spin fields. In this paper, we resolve these issues and obtain boundary representations for scalars of all masses as well as higher spin fields. We trace the origin of the previously discovered divergences and show that the smearing function becomes distributional for certain values of mass, spin and dimension. We also extend the construction from Bunch-Davies vacuum to all α -vacua.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2025.139655

Authors: Arundhati Goldar, Nirmalya Kajuri

Institution: Indian Institute of Technology Mandi

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: Science and Engineering Research Board

Award: G607272354