In relativistic heavy-ion collisions a hot and dense thermalized matter of deconfined partons, the Quark-Gluon Plasma (QGP), is created. Its global properties can be characterized by the measurements of particles in the low transverse momentum (or “soft”) regime, which represents over 95% of created particles. Many soft observables in proton-proton ($pp$) collisions at the highest LHC energies...
We study fluctuations of particle number in the presence of a critical point by utilizing molecular dynamics simulations of the classical Lennard-Jones fluid in a periodic box. The numerical solution of the N-body problem naturally incorporates all correlations, exact conservation laws, and finite size effects, allowing us to study the fluctuation signatures of the critical point in a...
The standard model is a remarkably consistent and complete quantum field theory. However, it fails to explain some fundamental problems such as the baryon asymmetry of the Universe, dark matter, and neutrino oscillations. Therefore SM is incomplete and requires an extension.
One possible approach is by adding new particles to the theory. There are two possible answers to the question ”Why do...
We study transport in the free fermionic one-dimensional systems subjected to arbitrary local potentials. The bias needed for the transport is modeled by the initial highly non-equilibrium distribution where only half of the system is populated. Additionally to that, the local potential is also suddenly changed when the transport starts. For such a quench protocol we compute the Full Counting...
The high-energy gamma-ray observations presume that the galactic emission is dominated by pion decay flux from cosmic ray interactions in the interstellar medium, with moderate contribution from isolated sources. In some isolated sources, gamma-rays may also be produced by the hadronic process, which implies the neutrino emission. However, no multi-messenger neutrino+gamma signal from the...
We study hybrid stars containing the color superconducting quark matter phase in their cores, described by the relativistic density functional approach. The hadronic matter was modeled within the realistic DD2 equation of state (EoS). We show that depending on the dimensionless vector and diquark couplings of quark matter characteristics of the deconfinement phase transition are varied,...
The spin-down of a compact star causes perturbations in the internal chemical equilibrium state, and, consequently internal heating dubbed as rotochemical heating. Moreover, the fact that the cores of compact stars are thought to reach baryon densities as high as a few times the nuclear saturation density, renders them ideal candidates of being host to deconfined quark matter, the latter...
