Massive islands
By H. Geng, A. Karch. Journal of High Energy Physics, 2020
239 citations recorded by the source corpus.
We comment on the role of the graviton mass in recent calculations of the Page curve using holographic ideas. All reliable calculations of the Page curve in more than 2+1 spacetime dimensions have been performed in systems with massive gravitons. A crucial ingredient in these calculations is the formation of islands, regions that contribute to the entropy of degrees of freedom located elsewhere. While most often simply ignored, it is indeed true that mass of the graviton does not appear to significantly affect the calculations that appeared in the literature. We use the freedom to change the graviton mass to give an extremely simple model of analytically tractable island formation in general dimensions. We do however note that if one attempts to take the limit of zero graviton mass, any contribution from the islands disappears. This raises the question to what extent entanglement islands can play a role in standard massless gravity.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/426b16003dd964d5a65791d89f72e6804e2ef5ae
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Citations in the corpus
- Quantum extremal islands made easy. Part II. Black holes on the brane (2020, background): “The absence of islands in this limit was already noted in [33].”
- Inconsistency of islands in theories with long-range gravity (2021, background): “) In this setting, it was pointed out in [40] that the lower-dimensional graviton is always massive.”
- Information Transfer with a Gravitating Bath (2020, background): “In the ε→ 0 limit, one recovers the tiny island surface with its negative infinite area difference to Hartman-Maldacena as already noted in [12] and consistent with general AdS/BCFT results [51].”
- Quantum extremal islands made easy. Part I. Entanglement on the brane (2020, methodology): “Other recent analyses in higher dimensions were undertaken numerically in [24], in an effective theory in flat space [36] and using a Randall-Sundrum-inspired toy model in [40].”
- Lessons from the information paradox (2020, background): “Thinking in terms of this picture also led to the recognition [136] that there is an interesting subtlety with the description in terms of the theory of gravity coupled to a CFTd shown on the left side of Figure 22: since the stress tensor on the (d − 1)dimensional boundary is no longer conserved du”