Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory

Brahma, Suddhasattwa, Dasgupta, Keshav and Tatar, Radu (2021) Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory. JOURNAL OF HIGH ENERGY PHYSICS, 2021 (7). 114-.

Access the full-text of this item by clicking on the Open Access link.

Official URL: http://dx.doi.org/10.1007/jhep07(2021)114

Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>We show that four-dimensional de Sitter space is a Glauber-Sudarshan state, i.e. a coherent state, over a supersymmetric solitonic background in full string theory. We argue that such a state is only realized in the presence of temporally varying degrees of freedom and after including quantum corrections, with supersymmetry being broken spontaneously. On the other hand, fluctuations over the resulting de Sitter space is governed by the Agarwal-Tara state, which is a graviton (and flux)-added coherent state. Once de Sitter space is realized as a coherent state, and <jats:italic>not</jats:italic> as a vacuum, its ability to remain out of the swampland as well as issues regarding its (meta)stability, vacuum energy, and finite entropy appear to have clear resolutions.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	M-Theory, Flux compactifications
Divisions:	Faculty of Science and Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	10 Dec 2021 15:17
Last Modified:	17 Mar 2024 12:27
DOI:	10.1007/JHEP07(2021)114
Open Access URL:	https://link.springer.com/article/10.1007%2FJHEP07...
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3145202