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Phenomenology with fluctuating quantum geometries in loop quantum cosmology
Ivan Agullo, Abhay Ashtekar, Brajesh Gupt
The goal of this paper is to probe phenomenological implications of large fluctuations of quantum geometry in the Planck era, using cosmology of the early universe. For the backgro…
Initial conditions for cosmological perturbations
Abhay Ashtekar, Brajesh Gupt
Penrose proposed that the big bang singularity should be constrained by requiring that the Weyl curvature vanishes there. The idea behind this past hypothesis is attractive because…
Quantum Gravity in the Sky: Interplay between fundamental theory and observations
Abhay Ashtekar, Brajesh Gupt
Observational missions have provided us with a reliable model of the evolution of the universe starting from the last scattering surface all the way to future infinity. Furthermore…
Symmetry Reduced Loop Quantum Gravity: A Bird's Eye View
Abhay Ashtekar
This is a brief overview of the current status of symmetry reduced models in Loop Quantum Gravity (LQG), focussing on the very early universe. Over the last 3 years or so the subje…