189 citations · 3.2k across the 131 of their papers we have counts for
57 papers · 1 filter
Why are the dilepton temperatures at the relativistic heavy-ion colliders are constant, T ~ 0.3 GeV?
Horst Stoecker, Leonid M. Satarov, Volodymyr Vovchenko
The STAR collaboration at RHIC and the ALICE collaboration at the LHC have reported dielectron spectra in the intermediate mass region, M = (1-3) GeV, which reveal a strikingly con…
Locating the QCD critical point through contours of constant entropy density
Hitansh Shah, Mauricio Hippert, Jorge Noronha +2
We propose a new method to investigate the existence and location of the conjectured high-temperature critical point of strongly interacting matter via contours of constant entropy…
Density correlations under global and local charge conservation
Volodymyr Vovchenko
This work presents a formalism to compute spatial -point correlations of a conserved charge density in a large thermal system in the canonical ensemble, with explicit results pr…
Magnetic field effect on hadron yield ratios and fluctuations in a hadron resonance gas
Volodymyr Vovchenko
This work studies the influence of an external magnetic field on hadron yields and fluctuations in a hadron resonance gas by performing calculations within an updated version of th…
The structure of the f_0(980) from system size dependent hadronic resonance ratios in p+p, p+Pb, and Pb+Pb collisions at the LHC
Tom Reichert, Jan Steinheimer, Volodymyr Vovchenko +3
It is shown that the hadronic phase in ultra-relativistic heavy ion collisions can be used to understand the properties of the resonance. In particular it is shown that…
Spinodal enhancement of fluctuations in nucleus-nucleus collisions
Roman Poberezhnyuk, Oleh Savchuk, Volodymyr Vovchenko +4
Subensemble Acceptance Method (SAM) [1,2] is an essential link between measured event-by-event fluctuations and their grand canonical theoretical predictions such as lattice QCD. T…
Effect of finite volume on thermodynamics of quark-hadron matter
Somenath Pal, Anton Motornenko, Volodymyr Vovchenko +3
The effects of a finite system volume on thermodynamic quantities, such as the pressure, energy density, specific heat, speed of sound, conserved charge susceptibilities and correl…
The Present and Future of QCD
P. Achenbach, D. Adhikari, A. Afanasev +400
This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclea…
Molecular dynamics analysis of particle number fluctuations in the mixed phase of a first-order phase transition
Volodymyr A. Kuznietsov, Oleh Savchuk, Roman V. Poberezhnyuk +3
Molecular dynamics simulations are performed for a finite non-relativistic system of particles with Lennard-Jones potential. We study the effect of liquid-gas mixed phase on partic…
Phase transition amplification of proton number fluctuations in nuclear collisions from a transport model approach
O. Savchuk, R. V. Poberezhnyuk, A. Motornenko +3
The time evolution of particle number fluctuations in nuclear collisions at intermediate energies ( GeV) is studied by means of the UrQMD-3.5 transport mode…
Fluctuations in heavy ion collisions and global conservation effects
Roman V. Poberezhnyuk, Volodymyr Vovchenko, Oleh Savchuk +3
Subensemble is a type of statistical ensemble which is the generalization of grand canonical and canonical ensembles. The subensemble acceptance method (SAM) provides general formu…
Cooper-Frye sampling with short-range repulsion
Volodymyr Vovchenko
This work incorporates the effect of short-range repulsion between particles into the Cooper-Frye hadron sampling procedure. This is achieved by means of a rejection sampling step,…
Thermodynamic approach to proton number fluctuations in baryon-rich heavy-ion matter created at moderate collision energies
Volodymyr Vovchenko, Volker Koch
We develop a framework to relate proton number cumulants measured in heavy-ion collisions within a momentum space acceptance to the susceptibilities of baryon number, assuming that…
Thermal-model-based characterization of heavy-ion-collision systems at chemical freeze-out
Jamie M. Karthein, Paolo Alba, Valentina Mantovani-Sarti +6
We investigate the chemical freeze-out in heavy-ion collisions (HICs) and the impact of the hadronic spectrum on thermal model analyses. Detailed knowledge of the hadronic spectrum…
Critical point particle number fluctuations from molecular dynamics
Volodymyr A. Kuznietsov, Oleh Savchuk, Mark I. Gorenstein +2
We study fluctuations of particle number in the presence of critical point by utilizing molecular dynamics simulations of the classical Lennard-Jones fluid in a periodic box. The n…
Coalescence, the thermal model and multi-fragmentation: The energy and volume dependence of light nuclei production in heavy ion collisions
Paula Hillmann, Katharina Käfer, Jan Steinheimer +2
We present results of a phase space coalescence approach within the UrQMD transport and -hybrid model for a very wide range of beam energies from SIS to LHC. The coalescence model…
Solving the puzzle of high temperature light (anti)-nuclei production in ultra-relativistic heavy ion collisions
Tim Neidig, Kai Gallmeister, Carsten Greiner +2
The creation of loosely bound objects in heavy ion collisions, e.g. light clusters, near the phase transition temperature has bee…
Proton number cumulants and correlation functions in Au-Au collisions at GeV from hydrodynamics
Volodymyr Vovchenko, Volker Koch, Chun Shen
We present a dynamical description of (anti)proton number fluctuations cumulants and correlation functions in central Au-Au collisions at GeV by utili…
Correcting event-by-event fluctuations in heavy-ion collisions for exact global conservation laws with the generalized subensemble acceptance method
Volodymyr Vovchenko
We introduce the subensemble acceptance method 2.0 (SAM-2.0) -- a procedure to correct cumulants of a random number distribution inside a subsystem for the effect of exact global c…
Constraining baryon annihilation in the hadronic phase of heavy-ion collisions via event-by-event fluctuations
Oleh Savchuk, Volodymyr Vovchenko, Volker Koch +2
We point out that the variance of net-baryon distribution normalized by the Skellam distribution baseline, , is sensitive to the possible m…
Ambiguities in the hadro-chemical freeze-out of Au+Au collisions at SIS18 energies and how to resolve them
Anton Motornenko, Jan Steinheimer, Volodymyr Vovchenko +2
The thermal fit to preliminary HADES data of Au+Au collisions at GeV shows two degenerate solutions at MeV and MeV. The analysis of…
Phase diagram of interacting pion matter and isospin charge fluctuations
O. S. Stashko, O. V. Savchuk, R. V. Poberezhnyuk +2
Equation of state and electric (isospin) charge fluctuations are studied for matter composed of interacting pions. The pion matter is described by self interacting scalar fields vi…
Particlization of an interacting hadron resonance gas with global conservation laws for event-by-event fluctuations in heavy-ion collisions
Volodymyr Vovchenko, Volker Koch
We revisit the problem of particlization of a QCD fluid into hadrons and resonances at the end of the fluid dynamical stage in relativistic heavy-ion collisions in a context of flu…
Higher order conserved charge fluctuations inside the mixed phase
Roman V. Poberezhnyuk, Oleh Savchuk, Mark I. Gorenstein +2
General formulas are presented for higher order cumulants of the conserved charge statistical fluctuations inside the mixed phase. As a particular example the van der Waals model i…