We investigate the coalescence factors $B_2$ and $B_3$ at low collision energies ($\sqrt{s_\mathrm{NN}}<6$ GeV) with special focus on the HADES and RHIC-BES experiments. It is shown that, in order to properly interpret the coalescence factors $B_A$, two important corrections are necessary: I) $B_2$ has to be calculated using the proton $\times$ neutron yields in the denominator, instead of the...
TBA
The heavy quarks (HQs) are considered to be effective probes to study the evolution of the QGP. We study the dynamics of HQs in a hot QCD medium with a time-correlated noise, η. We have introduced the effect of memory through η and the dissipative force in the Generalized Langevin equation. We supposed that the time correlations of the colored noise decay exponentially with time, called the...
We present equilibrium as well as out-of-equilibrium properties of the strongly interacting QGP medium under extreme conditions of high temperature $T$ and high baryon densities or baryon chemical potentials $\mu_B$ within a kinetic approach. We will explore first the thermodynamic and transport properties of the QGP close to equilibrium in the framework of effective models with $N_f=3$ active...
The Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) is a microscopic transport approach designed to describe the dynamical formation of clusters in HICs [1]. Within this framework we discuss the production of deuterons by two different mechanisms. The first one is the 'kinetic' formation of deuterons by inelastic $NNN \rightarrow N d$ and $\pi NN \rightarrow \pi d$ scattering processes which...
We study the interaction of leading jet partons in a strongly interacting quark-gluon plasma (sQGP) medium based on the effective dynamical quasi-particle model (DQPM). The DQPM describes the non-perturbative nature of the sQGP at finite temperature $T$ and baryon chemical potential $\mu_B$ based on a propagator representation of massive off-shell partons (quarks and gluons) whose properties...
The status of recent theoretical research related to the behavior
of the $\phi$ meson in nuclear matter is reviewed, focusing on observables
that will be measured at the J-PARC E16 experiment, including
dilepton and $K^+K^-$ decay modes and their angular distributions.
The relation of these observables to fundamental properties of the strong
interaction and nuclear matter, such as...
In this talk, we explain how machine-learning techniques (in particular, neural networks) can be applied to reconstruct the parton kinematics. We use as a reference process the production of pion+photon in hadron collisions, although the methodology can be easily extrapolated to any process. Besides reproducing results available in the literature, we provide a practical strategy to estimate...
I will review some fundamental aspects about the origin and evolution of magnetic fields in compact objects. From flux conservation in supernova collapse to dynamo models. I will also expose the main difficulties to explain the intense magnetic field measured in magnetars. Finally, I will relate this phenomenology to the magnetic fields observed in heavy ion collisions.
Compact stars (white dwarfs and neutron stars) possess strong magnetic fields that affect their micro and macrophysics. In recent years, several theoretical models of magnetized compact objects have been developed, considering different approximations and assumptions about the geometry and intensity of the stellar magnetic field. Such suppositions reflect on the resulting structure equations,...
We review the use of the CompOSE database of equations of state (EoS) of neutron stars. Our goal is to use several EoS to study the maximum mass of neutron stars and try to prove in the mass gap (lack of objects in the interval from 2 to 5 solar masses). We will present how to use the code and how to extract the relevant parameters.
We describe the use of the numerical code CLASS (Cosmic Linear Anisotropy Solving System) by Julien Lesgourgues. Our main objective is to know the capabilities of this code to use it in the calculation of inflationary models of the early universe in the framework of the Lee-Wick theory. In this talk we will give an introduction of the main features of this numerical code.
The photon propagation in a magnetized vacuum is described by non-linear electrodynamics. In this framework, the Energy momentum Tensor is obtained using the robust Euler-Hilbert method that allows getting physical quantities in particular the equation of state. The pressure becomes anisotropic and it is possible to define a pressure perpendicular and parallel to the magnetic field. The...
The macroscopic structure of magnetized strange stars is deformed due to the anisotropy in the pressures as a consequence of the magnetic field. In this work, we study implication of the magnetic field deformation in gravitational waves emission from strange stars.
Observational evidence indicates that there is a difference between the times of arrival at terrestrial detectors of electromagnetic radiation of different frequencies from space. This delay time has been observed for photons from cosmic rays, galaxies, neutron stars and even black holes. The origin of this delay is due to dispersion of the wave on his journey to Earth, caused by quantum...
A value for the mass of the scalar field is estimated from conjecturing the existence of Dynamic Gravastars as Black Hole candidates.
This mass is determined assuming that the mass of the DG corresponds with the intermediate mass gap, fixing around the values determined in GW190521 by the gravitational wave experiments Ligo-Virgo.
