Universe, Volume 2, Issue 3

This review describes the discovery of gravitational waves. We recount the journey of predicting and finding those waves, since its beginning in the early twentieth century, their prediction by Einstein in 1916, theoretical and experimental blunders,...

The relativity experiment is part of the Mercury Orbiter Radio science Experiment (MORE) on-board the ESA/JAXA BepiColombo mission to Mercury. Thanks to very precise radio tracking from the Earth and accelerometer, it will be possible to perform an a...

I show here that there are some interesting differences between the predictions of warm and cold inflation models focusing in particular upon the scalar spectral index $n_s$ and the tensor-to-scalar ratio r. The first thing to be noted is tha...

We present a brief review of the teleparallel equivalent of general relativity and analyse the expression for the centre of mass density of the gravitational field. This expression has not been sufficiently discussed in the literature. One motivation...

The Poisson structure of intrinsic time gravity is analysed. With the starting point comprising a unimodular three-metric with traceless momentum, a trace-induced anomaly results upon quantization. This leads to a revision of the choice of momentum v...

The existence of singularities alerts that one of the highest priorities of a centennial perspective on general relativity should be a careful re-thinking of the validity domain of Einstein’s field equations. We address the problem of constructing di...

We compute the suppression of the bottomonia states $\mathrm{{\rm Y}}(1S)$ , $\mathrm{{\rm Y}}(2S)$ , $\mathrm{{\rm Y}}(3S)$ , ${\chi }_b(1P)$ , ${\chi }_b(2P)$ , and ${\chi }_b(3P)$ states in Large Hadron Collider (LHC) $\sqrt{s_{NN}}=5.023$...

Loop quantum cosmology (LQC) is a framework of quantum cosmology based on the quantization of symmetry reduced models following the quantization techniques of loop quantum gravity (LQG). This paper is devoted to reviewing LQC as well as its various e...

We describe the primeval inflationary phase of the early Universe within a quantum field theoretical (QFT) framework that can be viewed as the effective action of vacuum decay in the early times. Interestingly enough, the model accounts for the “grac...