Universe, Volume 3, Issue 4

In this paper we present the measurement of charged pion two-particle femtoscopic correlation functions in $\sqrt{s_{NN}}=200$ GeV Au + Au collisions in 31 average transverse mass bins, separately for positive and negative pion pairs. Lévy-shap...

In ultra-relativistic collisions of heavy ions, the strongly interacting Quark Gluon Plasma (sQGP) is created. The fluid nature of the sQGP was one of the important discoveries of high energy heavy ion physics in the last decades. Henceforth the expl...

The motivation for this talk and paper is related to the classification of the homogeneous simply connected maximal 3-geometries (the so-called Thurston geometries: ${\mathbf{E}}^3$ , ${\mathbf{S}}^3$ , ${\mathbf{H}}^3$ , ${\mathbf{S}}^2\times \mathbf{R}$ , ${\mathbf{H}}^2\times \mathbf{R}$...

We investigate the effect of intense magnetic fields on the $(2+1)$ -dimensional reduced- magnetohydrodynamical (MHD) expansion of hot and dense quark–gluon plasma (QGP) produced in $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV Au+Au collisions. For the sake of...

Condensed Neutrino Objects (CNO) are a candidate for the Dark Matter which everyone has been looking for. In this article, from Albert Einstein’s original 1911 and 1917 papers, we begin the journey from weak lensing data to neutrino signatures. New r...

Conserved currents of any spin $t>0$ built from bosonic symmetric massless gauge fields of arbitrary integer spins $s_1+s_2>t$ in $Ad{S}_4$ are found. Analogous to the case of $4d$ Minkowski space, currents...

Wouldbe consequences of the existence of effective interactions in quantum gravitation theory are considered. In the framework of the approach, the example of a running gravitational coupling is presented, corresponding to an adequate description of...

Analysis of directed flow ( $v_1$ ) of protons, antiprotons and pions in heavy-ion collisions is performed in the range of collision energies $\sqrt{s_{NN}}$ = 2.7–39 GeV. Simulations have been done within a three-fluid model employing a purely...

We extend our recent study on the duality between stringy higher spin theories and free conformal field theories (CFTs) in the $SU\left(N\right)$ adjoint representation to other matrix models, namely the free $SO\left(N\right)$ and $Sp\left(N\right)$ ad...

Short-range correlations of identified charged hadrons in pp ( $\sqrt{s}=$ 0.9, 2.76, and 7 TeV), pPb ( $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV), and peripheral PbPb collisions ( $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 2.76 TeV) are studied with the CMS detector at the LHC. Cha...

Studies on heavy ion collisions have discovered that tiny fireballs of a new phase of matter—quark gluon plasma (QGP)—undergo an explosion, called the Little Bang. In spite of its small size, not only is it well described by hydrodynamics, but even s...

We propose a hybrid class of theories for higher spin gravity and matrix models, i.e., which handle simultaneously higher spin gravity fields and matrix models. The construction is similar to Vasiliev’s higher spin gravity, but part of the equations...

This paper discusses a simple procedure to reconstruct $f(R)$ -gravity models from exact cosmological solutions of the Einstein field equations with a non-interacting classical scalar field-and-radiation background. From the type of inflation...

In this seven-part paper, we show that gravitational waves (classical and quantum) produce the accelerated de Sitter expansion at the start and at the end of the cosmological evolution of the Universe. In these periods, the Universe contains no matte...

How precisely can we estimate cosmological parameters by performing a quantum measurement on a cosmological quantum state? In quantum estimation theory, the variance of an unbiased parameter estimator is bounded from below by the inverse of measureme...

We examine three point functions with two scalar operators and a higher spin current in 2d W ${}_N$ minimal model to the next non-trivial order in $1/N$ expansion. The minimal model was proposed to be dual to a 3d higher spin gauge theory,...

In this work we consider perturbations of homogeneous and hypersurface orthogonal cosmological backgrounds with local rotational symmetry (LRS), using a method based on the 1 + 1 + 2 covariant split of spacetime. The backgrounds, of LRS class II, are...

Pseudoscalars appear frequently in particle spectra. They can be light if they appear as pseudo-Goldstone bosons from some spontaneously broken global symmetries with the decay constant f. Since any global symmetry is broken at least by quantum gravi...

In this article, as a new mathematical approach to origin of the laws of nature, using a new basic algebraic axiomatic (matrix) formalism based on the ring theory and Clifford algebras (presented in Section 2), “it is shown that certain mathematical...