Work

Lessons from gauge fixing and polymerization of loop quantum black holes with a cosmological constant

Year: 2025

Type: article

Abstract: Loop quantization of Schwarzschild black holes with a cosmological constant for polymerization parameters which are constant is studied in the effective spacetime description. We show that for the positive cosmological constant there can be an appearance of large quantum effects at small spacetime curvatures. These effects can manifest as an additional black hole horizon. While the central singularity is resolved in all the cases, these limitations demonstrate incompatibility of the Kantowski-Sachs gauge and schemes with fixed polymerization parameters in the presence of a positive cosmological constant. In contrast, the case of a negative cosmological constant is free of such problematic features. Noted limitations are similar to those in the ${\ensuremath{\mu}}_{o}$ scheme for the loop quantization of cosmological models.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.086019

Authors: Geeth Ongole, Parampreet Singh, Anzhong Wang

Institutions: Baylor University, Louisiana State University

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Baylor University

Awards: Explorations in Quantum Gravity: Cosmological and Black Hole Spacetimes, Understanding Quantum Gravity from Very Early Universe, Explorations in Quantum Gravity: Cosmological and Black Hole Spacetimes