Holographic Entanglement Entropy without Holography

 Today, in the morning, I was learning how to do the Botez Gambit without making it a fail, when (after failing to make good of it in the last 30 seconds) I opened arXiv and saw a paper by Marolf and collaborators. The paper has to do with the notion of Ryu-Takayanagi and Hubeny-Rangamani-Takayanagi without AdS/CFT. While this particular title seems to not be very new (since bit threads are independent of holography up to a certain extent), the paper in itself is an amazing read, and unless Engelhardt and Liu's work on Algebraic ER=EPR comes out this month (which I hope it does), this would be the read of the month. Pasterski and collaborators also had a paper, but I am not into celestial holography, so I cannot say anything about it. 

Algebras and Hilbert spaces from gravitational path integrals: Understanding Ryu-Takayanagi/HRT as entropy without invoking holography

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