Fri - 08/16/24

There is no new related paper today

There is no new related paper today

  1. [] - Title: Quantum Gravitational Corrections in Cosmology - Xavier Calmet, Roberto Casadio, Marco Sebastianutti

Thu - 08/15/24

There is no new related paper today

There is no new related paper today

  1. [] - Title: Properties of dynamical regular black holes in semiclassical gravity - Ioannis Soranidis

Wed - 08/14/24

There is no new related paper today

There is no new related paper today

  1. [] - Title: Galaxy dynamics tracing quantum cosmology beyond $\Lambda$CDM below the de Sitter scale of acceleration - Maurice H.P.M. van Putten

Tue - 08/13/24

**Title:

      Spherically symmetric loop quantum gravity: Schwarzschild spacetimes with a cosmological constant**  - **Authors:** Esteban Mato, Javier Olmedo, Sahil Saini  - **Subjects:** Subjects: General Relativity and Quantum Cosmology (gr-qc)  - **Arxiv link:** [https://arxiv.org/abs/](https://arxiv.org/abs/)  - **Abstract**  We provide a quantization of the Schwarzschild spacetime in the presence of a cosmological constant, based on midisuperspace methods developed in the spherically symmetric sector of loop quantum gravity, using in particular the 'improved dynamics' scheme. We include both the deSitter and anti-deSitter cases. We find that the quantization puts a Planckian upper limit on the possible values of a positive cosmological constant similar to the bounds obtained earlier from studies of homogeneous spacetimes with a cosmological constant. Using semiclassical physical states, we obtain the effective metric and demonstrate the causal structure for various cases. Quantum gravity modifications ensure that the singularity is replaced by a transition surface in all the cases, where the curvature invariants approach mass-independent Planckian bounds. Analysis of the effective stress-energy tensor shows that the null energy condition is violated in the vicinity of the transition surface.

There is no new related paper today

  1. [] - Title: A New Approach for Calculation of Quasi-Normal Modes and Topological Charges of Regular Black Holes - MY Zhang, F Hosseinifar, H Chen, T Sathiyaraj, H Hassanabadi

Mon - 08/12/24

**Title:

      Spherically symmetric loop quantum gravity: Schwarzschild spacetimes with a cosmological constant**  - **Authors:** Esteban Mato, Javier Olmedo, Sahil Saini  - **Subjects:** Subjects: General Relativity and Quantum Cosmology (gr-qc)  - **Arxiv link:** [https://arxiv.org/abs/](https://arxiv.org/abs/)  - **Abstract**  We provide a quantization of the Schwarzschild spacetime in the presence of a cosmological constant, based on midisuperspace methods developed in the spherically symmetric sector of loop quantum gravity, using in particular the 'improved dynamics' scheme. We include both the deSitter and anti-deSitter cases. We find that the quantization puts a Planckian upper limit on the possible values of a positive cosmological constant similar to the bounds obtained earlier from studies of homogeneous spacetimes with a cosmological constant. Using semiclassical physical states, we obtain the effective metric and demonstrate the causal structure for various cases. Quantum gravity modifications ensure that the singularity is replaced by a transition surface in all the cases, where the curvature invariants approach mass-independent Planckian bounds. Analysis of the effective stress-energy tensor shows that the null energy condition is violated in the vicinity of the transition surface.

There is no new related paper today

  1. [] - Title: A New Approach for Calculation of Quasi-Normal Modes and Topological Charges of Regular Black Holes - MY Zhang, F Hosseinifar, H Chen, T Sathiyaraj, H Hassanabadi

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