20 citations · 24 across the 3 of their papers we have counts for
6 papers · 1 filter
Anomalies in the Cosmic Microwave Background and their Non-Gaussian Origin in Loop Quantum Cosmology
Ivan Agullo, Dimitrios Kranas, V. Sreenath
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 predi…
Cosmic tango between the very small and the very large: Addressing CMB anomalies through Loop Quantum Cosmology
Abhay Ashtekar, Brajesh Gupt, V. Sreenath
While the standard, six-parameter, spatially flat CDM model has been highly successful, certain anomalies in the cosmic microwave background bring out a tension between this mod…
Observational consequences of Bianchi I spacetimes in loop quantum cosmology
Ivan Agullo, Javier Olmedo, V. Sreenath
Anisotropies generically dominate the earliest stages of expansion of a homogeneous universe. They are particularly relevant in bouncing models, since shears grow in the contractin…
Hamiltonian theory of classical and quantum gauge invariant perturbations in Bianchi I spacetimes
Ivan Agullo, Javier Olmedo, V. Sreenath
We derive a Hamiltonian formulation of the theory of gauge invariant, linear perturbations in anisotropic Bianchi I spacetimes, and describe how to quantize this system. The matter…
Predictions for the CMB from an anisotropic quantum bounce
Ivan Agullo, Javier Olmedo, V. Sreenath
We introduce an extension of the standard inflationary paradigm on which the big bang singularity is replaced by an anisotropic bounce. Unlike in the big bang model, cosmological p…
Computation of non-Gaussianity in loop quantum cosmology
Vijayakumar Sreenath, Ivan Agullo, Boris Bolliet
We summarize our investigations of the second-order perturbations in loop quantum cosmology (LQC). We shall discuss, primarily, two aspects. Firstly, whether the second-order contr…