The exploration of the universe has recently entered a new era thanks to the multi-
messenger paradigm, characterized by a continuous increase in the quantity and quality of …

Singularities in any physical theory are either remarkable indicators of the unknown
underlying fundamental theory, or indicate a change in the description of the physical reality …

An outstanding open issue in our quest for physics beyond Einstein is the unification of
general relativity (GR) and quantum physics. Loop quantum gravity (LQG) is a leading …

Given the proliferation of bouncing models in recent years, we gather and critically assess
these proposals in a comprehensive review. The PLANCK data shows an unmistakably red …

In quantum cosmology, one applies quantum physics to the whole universe. While no
unique version and no completely well-defined theory is available yet, the framework gives …

This Chapter provides an up to date, pedagogical review of some of the most relevant
advances in loop quantum cosmology. We review the quantization of homogeneous …

A large number of models have been analyzed in loop quantum cosmology, using mainly
minisuperspace constructions and perturbations. At the same time, general physics …

Despite being created through a fundamentally quantum-mechanical process, cosmological
structures have not yet revealed any sign of genuine quantum correlations. Among the …

'Written by young theoretical physicists who are experts in the field, this volume is meant
both to provide an introduction to the field and to offer a review of the latest developments …

Certain anomalies in the CMB bring out a tension between the six-parameter flat Λ CDM
model and the CMB data. We revisit the PLANCK analysis with loop quantum cosmology …