author={Aur{\'e}lien Barrau},
  journal={arXiv: General Relativity and Quantum Cosmology},
  • A. Barrau
  • Published 19 November 2009
  • Physics
  • arXiv: General Relativity and Quantum Cosmology
This brief article sums up the possible imprints of loop quantum gravity effects on the cosmological microwave background. We focus on semi-classical terms and show that "Big Bounce" corrections, together with the "pre Big Bounce" state, could modify the observed spectrum. 

Loop quantum gravity: the first 25 years

I give a synthetic presentation of loop quantum gravity. I present the aims of the theory and compare the results obtained with the initial hopes that motivated the early interest in this research

Loop Quantum Gravity

This article presents an "in-a-nutshell" yet self-contained introductory review on loop quantum gravity (LQG) -- a background-independent, nonperturbative approach to a consistent quantum theory of

Quantum gravity: A brief history of ideas and some prospects

We present a bird’s-eye survey on the development of fundamental ideas of quantum gravity, placing emphasis on perturbative approaches, string theory, loop quantum gravity, and black hole

Inflation and Loop Quantum Cosmology

On the one hand, inflation is an extremely convincing scenario: it solves most cosmological paradoxes and generates fluctuations that became the seeds for the growth of structures. It, however,

New Approach to Evolving Gravitational Waves in Loop Quantum Cosmology.

With the observational advance in recent years, primordial gravitational waves (GWs), known as the tensor-mode cosmic perturbations, in the Loop Quantum Cosmology (LQC) are becoming testable and thus

Observational hints on the Big Bounce

In this paper we study possible observational consequences of the bouncing cosmology. We consider a model where a phase of inflation is preceded by a cosmic bounce. While we consider in this paper

2 1 D ec 2 01 0 Loop Quantum Gravity : the first twenty five years

Loop gravity is not quite twenty-five years old, but is getting close to such a venerable age: several basic ideas emerged from extensive discussions at a 1986 workshop on Quantum Gravity at the



Holonomy corrections to the cosmological primordial tensor power spectrum

Loop quantum gravity is one of the leading candidate theory to non-perturbatively quantize gravity. In this framework, holonomy corrections to the equation of propagation of gravitons in a FLRW

Fully loop-quantum-cosmology-corrected propagation of gravitational waves during slow-roll inflation

The cosmological primordial power spectrum is known to be one of the most promising observable to probe quantum gravity effects. In this article, we investigate how the tensor power spectrum is

Loop Quantum Cosmology corrections on gravity waves produced during primordial inflation

Loop Quantum Gravity (L.Q.G.) is one of the two most promising tentative theory for a quantum description of gravity. When applied to the entire universe, the so-called Loop Quantum Cosmology

Observational constraints on a power spectrum from super-inflation in loop quantum cosmology

In loop quantum cosmology there may be a super-inflation phase in the very early universe, in which a single scalar field with a negative power-law potential $V= -M^4(\phi/M)^\beta$ plays important

An invitation to loop quantum gravity

We describe the basic assumptions and key results of loop quantum gravity, which is a background independent approach to quantum gravity. The emphasis is on the basic physical principles and how one

Possible observational effects of loop quantum cosmology

In this paper, we consider realistic model of inflation embedded in the framework of loop quantum cosmology. Phase of inflation is preceded here by the phase of a quantum bounce. We show how

Introduction to loop quantum gravity and spin foams

These notes are a didactic overview of the non perturbative and background independent approach to a quantum theory of gravity known as loop quantum gravity. The definition of real connection

Quantum gravity

  • C. Rovelli
  • Computer Science, Physics
  • 2008

J . Grain and A . Barrau

  • Phys . Rev . Lett
  • 2009