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hep-th2025
Absolute entropy and the observer's no-boundary state
Andreas Blommaert, Jonah Kudler-Flam, Erez Y. Urbach
We investigate the no-boundary proposal for closed universes with an observer. We argue that the observer's no-boundary state is the identity operator on the physical Hilbert space…
hep-th2024
Gravitons on the edge
Andreas Blommaert, Sean Colin-Ellerin
We study free graviton entanglement between Rindler wedges in the Minkowski vacuum state via the Euclidean path integral. We follow Kabat's method for computing the conical entropy…
hep-th2019
Eigenbranes in Jackiw-Teitelboim gravity
Andreas Blommaert, Thomas G. Mertens, Henri Verschelde
It was proven recently that JT gravity can be defined as an ensemble of L x L Hermitian matrices. We point out that the eigenvalues of the matrix correspond in JT gravity to FZZT-t…