Singularity theorems in the effective field theory for quantum gravity at second order in curvature

Kuipers, Folkert and Calmet, Xavier (2020) Singularity theorems in the effective field theory for quantum gravity at second order in curvature. Universe, 6 (10). a171 1-17. ISSN 2218-1997

[img] PDF - Accepted Version
Available under License Creative Commons Attribution.

Download (421kB)
[img] PDF - Published Version
Available under License Creative Commons Attribution.

Download (336kB)

Abstract

In this paper, we discuss singularity theorems in quantum gravity using effective field theory methods. To second order in curvature, the effective field theory contains two new degrees of freedom which have important implications for the derivation of these theorems: a massive spin-2 field and a massive spin-0 field. Using an explicit mapping of this theory from the Jordan frame to the Einstein frame, we show that the massive spin-2 field violates the null energy condition, while the massive spin-0 field satisfies the null energy condition, but may violate the strong energy condition. Due to this violation, classical singularity theorems are no longer applicable, indicating that singularities can be avoided, if the leading quantum corrections are taken into account.

Item Type: Article
Keywords: quantum gravity, singularity theorems
Schools and Departments: School of Mathematical and Physical Sciences > Mathematics
School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 06 May 2021 08:04
Last Modified: 06 May 2021 08:15
URI: http://sro.sussex.ac.uk/id/eprint/98872

View download statistics for this item

📧 Request an update