# Quantum cosmology: a review

@article{Bojowald2015QuantumCA, title={Quantum cosmology: a review}, author={Martin Bojowald}, journal={Reports on Progress in Physics}, year={2015}, volume={78} }

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 rise to interesting conceptual, mathematical and physical questions. This review presents quantum cosmology in a new picture that tries to incorporate the importance of inhomogeneity. De-emphasizing the traditional minisuperspace view, the dynamics is rather formulated in terms of the interplay of many interacting…

## 138 Citations

### Quantum Cosmology from Group Field Theory Condensates: a Review

- Physics
- 2016

We give, in some detail, a critical overview over recent work towards deriving a cosmological phenomenology from the fundamental quantum dynamics of group field the- ory (GFT), based on the picture…

### Effective Field Theory of Loop Quantum Cosmology

- PhysicsUniverse
- 2019

Quantum cosmology is traditionally formulated in a minisuperspace setting, implicitly averaging fields over space to obtain homogeneous models. For universal reasons related to the uncertainty…

### Minisuperspace models of discrete systems

- Physics
- 2017

A discrete quantum spin system is presented in which several modern methods of canonical quantum gravity can be tested with promising results. In particular, features of interacting dynamics are…

### Minisuperspace Quantum Cosmology in Metric and Affine Theories of Gravity

- PhysicsUniverse
- 2022

Minisuperspace Quantum Cosmology is an approach by which it is possible to infer initial conditions for dynamical systems which can suitably represent observable and non-observable universes. Here we…

### Using Trajectories in Quantum Cosmology

- PhysicsUniverse
- 2018

Quantum cosmology based on the Wheeler De Witt equation represents a simple way to implement plausible quantum effects in a gravitational setup. In its minisuperspace version wherein one restricts…

### Protected SL(2,ℝ) symmetry in quantum cosmology

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

The polymer quantization of cosmological backgrounds provides an alternative path to the original Wheeler-de Witt (WdW) quantum cosmology, based on a different representation the commutation…

### The de Broglie–Bohm Quantum Theory and Its Application to Quantum Cosmology

- PhysicsUniverse
- 2021

We review the de Broglie–Bohm quantum theory. It is an alternative description of quantum phenomena in accordance with all the quantum experiments already performed. Essentially, it is a dynamical…

### The BKL scenario, infrared renormalization, and quantum cosmology

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

A discussion of inhomogeneity is indispensable to understand quantum cosmology, even if one uses the dynamics of homogeneous geometries as a first approximation. While a full quantization of…

### Space–Time Physics in Background-Independent Theories of Quantum Gravity

- PhysicsUniverse
- 2021

Background independence is often emphasized as an important property of a quantum theory of gravity that takes seriously the geometrical nature of general relativity. In a background-independent…

### Quantum dynamics of the black hole interior in LQC

- Physics
- 2020

It has been suggested that the homogeneous black hole interior spacetime, when quantized following the techniques of loop quantum cosmology, has a resolved singularity replaced by a black-to-white…

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