• Corpus ID: 238408433

# Report on the session Loop Quantum Gravity: Cosmology and Black Holes of the 16th Marcel Grossmann Meeting

@inproceedings{Pullin2021ReportOT,
title={Report on the session Loop Quantum Gravity: Cosmology and Black Holes of the 16th Marcel Grossmann Meeting},
author={Jorge Pullin and Parampreet Singh},
year={2021}
}
• Published 5 October 2021
• Physics
We summarize the main results of 19 talks presented at the QG3 session (loop quantum gravity: cosmology and black holes) of the 16th Marcel Grossmann Meeting held online from July $5^{\mathrm{th}}$-10$^{\mathrm{th}}$, 2021.

## References

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• Physics
Physical Review D
• 2022
We present the detailed analyses of a model of loop quantum Schwarzschild interior coupled to a massless scalar field and extend the results in our previous rapid communication [1] to more general

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• Physics
Physical Review D
• 2020
We explore a reduced phase space quantization of loop quantum cosmology (LQC) with Gaussian and Brown-Kuchař dust, and massless Klein-Gordon scalar reference fields for a spatially flat FLRW model

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• Physics
• 2020
We derive Loop Quantum Gravity corrections to the Raychaudhuri equation in the interior of a Schwarzschild black hole and near the classical singularity. We show that the resulting effective equation

### Cosmic Tango Between the Very Small and the Very Large: Addressing CMB Anomalies Through Loop Quantum Cosmology

• Physics
Frontiers in Astronomy and Space Sciences
• 2021
While the standard, six-parameter, spatially flat Λ CDM model has been highly successful, certain anomalies in the cosmic microwave background bring out a tension between this model and observations.

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• Physics
Physical Review D
• 2021
We study some consequences of the loop quantization of the outermost dust shell in the Lemâıtre–Tolman–Bondi spacetime with a homogeneous dust density using different quantization strategies

### Primordial power spectrum from a matter-ekpyrotic bounce scenario in loop quantum cosmology

• Physics
• 2021
A union of matter bounce and Ekpyrotic scenarios is often studied in an attempt to combine the most promising features of these two models. Since non-perturbative quantum geometric effects in loop

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• Physics
Physical Review D
• 2020
We investigate the consequences of different regularizations and ambiguities in loop cosmological models on the predictions in the scalar and tensor primordial spectrum of the cosmic microwave

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• Physics, Mathematics
Physical Review D
• 2021
In the path integral formulation of the reduced phase space Loop Quantum Gravity (LQG), we propose a new approach to allow the spatial cubic lattice (graph) to change dynamically in the physical time

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We do not observe quantum effects on cosmological scales. Thus, if loop quantum cosmology (LQC) is to provide an accurate depiction of the real world, it must allow for quantum states of spacetime

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• Physics
Physical review letters
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This work revisits the PLANCK analysis with loop quantum cosmology (LQC) predictions and shows that LQC alleviates both the large-scale power anomaly and the tension in the lensing amplitude, and concludes with a prediction of larger optical depth and power suppression in the B-mode polarization power spectrum on large scales.