8 citations · 26 across the 12 of their papers we have counts for
12 papers
Genericness of quantum damping of cosmological shear in modified loop quantum cosmology
Wen-Cong Gan, Leila L. Graef, Rudnei O. Ramos +2
In arXiv:2603.18175, the authors argue, based on numerical studies of particular cases, that the quantum damping of cosmological shear in a modified loop quantum cosmological model…
Warm Warped Throats
Dibya Chakraborty, Rudnei O. Ramos
We investigate brane inflation, focusing on warm inflation realizations within a warped throat geometry. While the standard scenario relies on a single mobile -brane moving rad…
Polymerized spacetime dynamics with multifield source: Unraveling the pre-inflationary Universe
Divya Gupta, Manabendra Sharma, Gustavo S. Vicente +2
We study a multifield model in loop quantum cosmology for a maximally symmetric spacetime governed by the Einstein-Hilbert action minimally coupled to scalar fields. Using a Legend…
Thermal enhancement of inflationary magnetic fields
Arjun Berera, Suddhasattwa Brahma, Zizang Qiu +1
We investigate primordial magnetogenesis by assuming the gauge field is prepared in a thermal state during inflation rather than the standard Bunch-Davies vacuum. The temperature $…
Choice of Quantum Vacuum for Inflation Observables
Melo Wood-Saanaoui, Rudnei O. Ramos, Arjun Berera
We investigate the modifications to inflationary observables that arise when adopting an -vacuum instead of the standard Bunch--Davies vacuum for quantum fluctuations during inf…
Constraining a de Broglie--Bohm quantum bounce cosmology with Planck data
Micol Benetti, Rudnei O. Ramos, Renato Silva +1
This work investigates a singularity-free early Universe within the paradigm of quantum cosmology. We develop a bouncing model where the singularity is resolved via the de Broglie-…
Quantum Damping of Cosmological Shear: A New Prediction from Loop Quantum Cosmologies
Wen-Cong Gan, Leila L. Graef, Rudnei O. Ramos +2
We study the dynamics of the Bianchi I universe in modified loop quantum cosmology (mLQC-I) and uncover a robust mechanism for isotropization: the shear is dynamically suppressed a…
Warming up the Fibres
Dibya Chakraborty, Rudnei O. Ramos
Fibre inflationary models are constructed in type-IIB string flux compactification. These models have been shown to be in agreement with the cosmological observations under appropr…
Warm multi natural inflation
Asuka Ito, Rudnei O. Ramos
Multi-natural inflation is studied in the context of warm inflation. We study the warm multi-natural inflation scenario with both linear and cubic temperature-dependent dissipation…
-attractor potentials in loop quantum cosmology
G. L. L. W. Levy, Rudnei O. Ramos
We perform in this work an analysis of the background dynamics for -attractor models in the context of loop quantum cosmology. Particular attention is given to the determination…
Defying eternal inflation in warm inflation with a negative running
Gabriele Montefalcone, Rudnei O. Ramos, Gustavo S. Vicente +1
It was pointed out previously~\cite{Kinney:2014jya} that a sufficiently negative running of the spectral index of curvature perturbations from (ordinary i.e. cold) inflation is abl…
Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime
Manabendra Sharma, Gustavo S. Vicente, Leila L. Graef +2
This paper investigates Bianchi I spacetimes within the Jordan frame of Brans-Dicke theory, incorporating the framework of effective loop quantum gravity. After developing general…