Primordial black holes in loop quantum cosmology: the effect on the threshold [PDF]
Classical and quantum gravity, 2023 Primordial black holes form in the early Universe and constitute one of the most viable candidates for dark matter. The study of their formation process requires the determination of a critical energy density perturbation threshold δc , which in general ...
T. Papanikolaou
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Extended phase space quantization of a black hole interior model in loop quantum cosmology [PDF]
Physical Review D, 2023 Considerable attention has been paid to the study of the quantum geometry of nonrotating black holes within the framework of Loop Quantum Cosmology.
Beatriz Elizaga Navascués +2 more
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Non-Gaussianity in loop quantum cosmology [PDF]
Physical Review D, 2018 Minor updates: current version matches the accepted PRD ...
Iván Agulló +2 more
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Estimation of imprints of the bounce in loop quantum cosmology on the bispectra of cosmic microwave background [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 Primordial non-Gaussianity has set strong constraints on models of the early universe. Studies have shown that Loop Quantum Cosmology (LQC), which is an attempt to extend inflationary scenario to planck scales, leads to a strongly scale dependent and ...
Roshna K, V. Sreenath
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Loop quantum cosmology: relation between theory and observations [PDF]
, 2023 This chapter provides a review of the frameworks developed for cosmological perturbation theory in loop quantum cosmology, and applications to various models of the early universe including inflation, ekpyrosis and the matter bounce, with an emphasis on ...
I. Agulló +2 more
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Analytic Primordial Power Spectrum in the Dressed Metric Approach to Loop Quantum Cosmology and Thermodynamics of Spacetime [PDF]
International Journal of Modern Physics D, 2023 We investigate the primordial power spectrum of cosmological tensor perturbations in the dressed metric approach to Loop Quantum Cosmology. We compute the background-dependent effective mass that affects their propagation using the effective description ...
A. Alonso-Serrano +2 more
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Is the diagonal case a general picture for loop quantum cosmology? [PDF]
Physical Review D, 2023 The correct implementation of the Loop Quantum Gravity to the early homogeneous Universe has been the subject of a long debate in the literature because the SU(2) symmetry cannot be properly retained.
Matteo Bruno, G. Montani
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Constraining the Barbero-Immirzi parameter from the duration of inflation in loop quantum cosmology [PDF]
Physical Review D, 2022 We revisit the predictions for the duration of the inflationary phase after the bounce in loop quantum cosmology. We present our analysis for different classes of inflationary potentials that include the monomial power-law chaotic type of potentials, the
L. Barboza +3 more
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Anomalies in the Cosmic Microwave Background and Their Non-Gaussian Origin in Loop Quantum Cosmology [PDF]
Frontiers in Astronomy and Space Sciences, 2021 Anomalies in the cosmic microwave background (CMB) refer to features that have been observed, mostly at large angular scales, and which show some tension with the statistical predictions of the standard ΛCDM model. In this work, we focus our attention on
I. Agulló +2 more
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Non-standard loop quantum cosmology [PDF]
Annalen der Physik, 2010 AbstractWe present results concerning the nature of the cosmological big bounce (BB) transition within the loop geometry underlying loop quantum cosmology (LQC). Our canonical quantization method is an alternative to the standard LQC. An evolution parameter we use has clear interpretation both at classical and quantum levels.
Piechocki W
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