PIRSA:24020091

Sifting quantum black holes through the principle of least action

Platania, A. (2024). Sifting quantum black holes through the principle of least action. Perimeter Institute. https://pirsa.org/24020091

Platania, Alessia. Sifting quantum black holes through the principle of least action. Perimeter Institute, Feb. 22, 2024, https://pirsa.org/24020091 

          @misc{ pirsa_PIRSA:24020091,
            doi = {10.48660/24020091},
            url = {https://pirsa.org/24020091},
            author = {Platania, Alessia},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Sifting quantum black holes through the principle of least action},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {feb},
            note = {PIRSA:24020091 see, \url{https://pirsa.org}}
          }

Alessia Platania

University of Copenhagen

Talk number
PIRSA:24020091
Collection
Talk Type
Subject
Abstract

 

We tackle the question of whether regular black holes or other alternatives to the Schwarzschild solution can arise from an action principle in quantum gravity. Focusing on an asymptotic expansion of such solutions and inspecting the corresponding field equations, we demonstrate that their realization within a principle of stationary action would require either fine-tuning, or strong infrared non-localities in the gravitational effective action. We will also show that the black hole entropy of theories displaying such infrared non-localities diverge. The principle of least action and the consistency of Wald entropy thus yield non-trivial asymptotic constraints on the metric of quantum black holes.

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