[en] At the Quark Matter 2018 conference, the PHENIX Collaboration gave 10 parallel talks and 19 posters on a wide variety of topics in small and large systems. In these proceedings we discuss a few key results shown at the conference.

[en] A study is make of the filamentation instability of quark-gluon plasma excited by a hard jet of colored partons. The analysis is made with allowance for the dispersion properties of the plasma associated with the expected high temperature of the quark-gluon matter in ultrarelativistic collisions of nuclei. It is pointed out that there is a possibility of diagnostics of the initial temperature of the quark-gluon plasma by means of hard jets on the basis of the filamentation effect. 16 refs., 2 figs

[en] The authors examine the neutrino emissivity of a system of degenerate three-component (μ,d,s) strange quark matter using improved expressions for the quark chemical potentials in a selfconsistent manner, and obtain tighter bounds on the neutrino emissivity due to the presence of strange quarks

[en] We survey the early history of the discovery of quark gluon plasma and the early history of the Universe, beginning with the present day and reaching deep into QGP and almost beyond. We introduce cosmological Universe dynamics and connect the different Universe epochs with one another. We describe some of the many remaining open questions that emerge

[en] Highlights of the experimental results presented at the Quark Matter 2005 Conference in Budapest (Hungary) are reviewed and open issues are discussed

[en] This short note is a contribution to the discussion of the session on strangeness and astrophysics. A personally biased overview and outlook of the field is given. (author)

[en] In this study, we investigate the time evolution of heavy quarkonium in the quark-gluon plasma using the open quantum system approach. Via this framework, we systematically incorporate the interactions between the quarkonium system and the quark-gluon plasma environment at high temperatures in a Lindblad master equation for the density matrix of the quark antiquark pair. This guarantees the conservation of positivity and hermiticity of the density matrix. We derive the explicit form of the master equation in the relative coordinates and simulate the corresponding time evolution in 1 + 1 dimensions observing the approach towards thermal equilibrium via the Quantum State Diffusion method. We find that in the presence of quantum dissipation the distribution of the quarkonium eigenstates approaches a Boltzmann distribution after enough time has passed. (author)

[en] Polarization and chirality are direct manifestations of quantum mechanics in the Quark Gluon Plasma as a relativistic fluid. This is one of the reasons why they are intriguing phenomena, that have attracted so much attention lately. In this talk I will review what is, in my view, the current theoretical understanding and highlight the most interesting recent results.

[en] Published in summary form only

[en] Short communication