Constraining braneworlds with entanglement entropy

Geng, Hao; Karch, Andreas; Perez-Pardavila, Carlos; Randall, Lisa; Riojas, Marcos; Shashi, Sanjit; Youssef, Merna

doi:10.21468/SciPostPhys.15.5.199

SciPost Physics

Constraining braneworlds with entanglement entropy

Hao Geng, Andreas Karch, Carlos Perez-Pardavila, Lisa Randall, Marcos Riojas, Sanjit Shashi, Merna Youssef

SciPost Phys. 15, 199 (2023) · published 21 November 2023

doi: 10.21468/SciPostPhys.15.5.199
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Abstract

We propose swampland criteria for braneworlds viewed as effective field theories of defects coupled to semiclassical gravity. We do this by exploiting their holographic interpretation. We focus on general features of entanglement entropies and their holographic calculations. Entropies have to be positive. Furthermore, causality imposes certain constraints on the surfaces that are used holographically to compute them, most notably a property known as causal wedge inclusion. As a test case, we explicitly constrain the Dvali-Gabadadze-Porrati term as a second-order-in-derivatives correction to the Randall-Sundrum action. We conclude by discussing the implications of these criteria for the question on whether entanglement islands in theories with massless gravitons are possible in Karch-Randall braneworlds.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.15.5.199
TI  - Constraining braneworlds with entanglement entropy
PY  - 2023/11/21
UR  - https://scipost.org/SciPostPhys.15.5.199
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 15
IS  - 5
SP  - 199
A1  - Geng, Hao
AU  - Karch, Andreas
AU  - Perez-Pardavila, Carlos
AU  - Randall, Lisa
AU  - Riojas, Marcos
AU  - Shashi, Sanjit
AU  - Youssef, Merna
AB  - We propose swampland criteria for braneworlds viewed as effective field theories of defects coupled to semiclassical gravity. We do this by exploiting their holographic interpretation. We focus on general features of entanglement entropies and their holographic calculations. Entropies have to be positive. Furthermore, causality imposes certain constraints on the surfaces that are used holographically to compute them, most notably a property known as causal wedge inclusion. As a test case, we explicitly constrain the Dvali-Gabadadze-Porrati term as a second-order-in-derivatives correction to the Randall-Sundrum action. We conclude by discussing the implications of these criteria for the question on whether entanglement islands in theories with massless gravitons are possible in Karch-Randall braneworlds.
ER  -

@Article{10.21468/SciPostPhys.15.5.199,
	title={{Constraining braneworlds with entanglement entropy}},
	author={Hao Geng and Andreas Karch and Carlos Perez-Pardavila and Lisa Randall and Marcos Riojas and Sanjit Shashi and Merna Youssef},
	journal={SciPost Phys.},
	volume={15},
	pages={199},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.15.5.199},
	url={https://scipost.org/10.21468/SciPostPhys.15.5.199},
}

Cited by 10

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¹ Hao Geng,
² Andreas Karch,
² Carlos Perez-Pardavila,
¹ Lisa Randall,
² Marcos Riojas,
² Sanjit Shashi,
² Merna Youssef

Funders for the research work leading to this publication