Gravitons on the edge
Year: 2025
Type: article
Abstract: A bstract 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, using the heat kernel on the cone with the tip removed, whose resulting von Neumann entropy for photons correctly predicted electromagnetic edge modes. We find that, in addition to the bulk graviton contributions, the conical entropy has a contact term that can be attributed to a vector field anchored to the ( d – 2)-dimensional (Euclidean) Rindler horizon whose contribution equals d – 2 times Kabat’s contact term for photons. We suggest that graviton edge modes are hence the d – 2 large diffeomorphisms which act internally within the Rindler horizon. Along the way, we address several known issues regarding graviton entanglement. We furthermore sketch how our results may be used to study edge modes in closed bosonic string theory.
Source: Journal of High Energy Physics
Authors: Andreas Blommaert, Sean Colin-Ellerin
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G3398237449, G4689434848, G543303420, Particles, Strings and Gravity in a Dynamical Universe, THE GEOMETRY AND FLOW OF QUANTUM INFORMATION: FROM QUANTUM GRAVITY TO QUANTUM TECHNOLOGY, Kavli Institute for Theoretical Physics, THE GEOMETRY AND FLOW OF QUANTUM INFORMATION: FROM QUANTUM GRAVITY TO QUANTUM TECHNOLOGY
OpenAlex ID: W4408506897