Erlangen 2026 – scientific programme
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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik
MP 6: Holography: AdS/CFT
MP 6.2: Talk
Wednesday, March 18, 2026, 16:30–16:45, KH 02.013
Bulk actions and equations for Area Metrics in AdS/CFT — Aranya Bhattacharya1,2, Lavish Chawla1,3, •Mario Flory1, and Mateusz Kulig1 — 1Jagiellonian University, Cracow, Poland — 2University of Bristol, Bristol, UK — 3Friedrich-Schiller-Universität, Jena, Germany
Continuing the talk by L. Chawla, we investigate possible bulk Lagrangians for linearised area metric perturbations around AdS space. Beyond the Ryu-Takayanagi formula and the first law of entanglement, we expect these Lagrangians to be severely constrained by the requirement of consistency with holographic renormalisation. To make progress in this direction, we analyse the asymptotic behaviour allowed for the area metric fluctuations by generic model Lagrangians and their equations of motion. Finally, we show that expressing these fluctuations in terms of Lanczos-like potentials leads to a particularly elegant formulation of the linearised theory.
Keywords: Area Metrics; AdS/CFT; Emergent gravity; Entropic gravity; Entanglement entropy