2024
Fluctuations and correlations in heavy-ion collisions as a probe of the QCD phase structure
The phase structure of QCD and the nature of the transition between ordinary hadronic matter and the deconfined state of quark-gluon plasma remain among the key open questions in high-energy physics. This talk will explore how these …
2023
Cooper-Frye sampling with short-range repulsion
We incorporate the effect of short-range repulsion among hadrons into the Cooper-Frye sampling procedure through a rejection sampling step that prohibits any pair of particles from overlapping in the coordinate space, effectively …
Proton number cumulants in heavy-ion collisions and the search for the QCD critical point
The phase structure of QCD and the nature of the transition between ordinary hadronic matter and the deconfined state of quark-gluon plasma remain among the key open questions in high-energy physics. This talk will explore how these …
Proton number cumulants and correlation functions at RHIC-BES from hydrodynamics
I will present the behavior of proton number cumulants and correlation functions in heavy-ion collisions based on relativistic hydrodynamics, incorporating essential non-critical contributions such as the exact conservation of multiple …
2022
Baryon annihilation and multiplicity dependence of p/$\pi$ and light nuclei ratios
The centrality dependence of the 𝑝/𝜋 ratio measured by the ALICE Collaboration in 5.02 TeV Pb-Pb collisions indicates a statistically significant suppression with the increase of the charged multiplicity, once the centrality-correlated …
QCD phase structure from fluctuations in heavy-ion collisions
One of the key open questions is the phase structure of QCD and the nature of the transition between ordinary hadronic matter and the deconfined state of quark-gluon plasma taking place at extreme temperatures in excess of trillions of …
Hadronic resonance production in a partial chemical equilibrium model
I will discuss an extended thermal model description of hadronic resonance production in (mid-)central collisions of heavy ions utilizing the partial chemical equilibrium framework. In particular, it is shown how the yields of …
Proton number cumulants and correlation functions from hydrodynamics and the QCD phase diagram
We present a dynamical description of (anti)proton number cumulants and correlation functions in heavy-ion collisions by utilizing hydrodynamics simulations [1]. The cumulants are calculated via an appropriately extended Cooper-Frye …
Unveiling the Properties of Strongly Interacting Matter under Extreme Conditions
Quantum chromodynamics (QCD) is the fundamental theory describing strong nuclear force. Despite its precise mathematical definition, much remains unknown regarding the properties of strongly interacting QCD matter in the …
2021
Net-particle number fluctuations in a hydrodynamic description of heavy-ion collisions
We generalize the Cooper-Frye particlization routine to make it suitable for describing event-by-event fluctuations in heavy-ion collisions. This is achieved via a newly developed subensemble method, allowing to incorporate the effects …
2020
Probing the QCD equation of state with fluctuations of conserved charges
Fluctuations of conserved charges carry rich information about the fine details of the QCD equation of state. Recent lattice QCD data on high order baryon number susceptibilities are used here to constrain the excluded volume …
Pion condensation in the early Universe at nonvanishing lepton flavor asymmetry
A possibility of formation of a Bose-Einstein condensed phase of pions in the early Universe at nonvanishing values of lepton flavor asymmetries is investigated. The evolution of cosmic trajectories during the QCD epoch is evaluated at …
Pion condensation in the early Universe at nonvanishing lepton flavor asymmetry
A possibility of formation of a Bose-Einstein condensed phase of pions in the early Universe at nonvanishing values of lepton flavor asymmetries is investigated. The evolution of cosmic trajectories during the QCD epoch is evaluated at …
Recent results on light nuclei production in extended thermal model descriptions
I will present recent results on light nuclei production in relativistic heavy-ion collisions within two extensions of the thermal model approach. First, a canonical formulation of the statistical model will be exploited to analyze the …
Nuclear clusters in an off-equilibrium thermal model
The production of light (anti-)(hyper-)nuclei during the hadronic phase of heavy-ion collisions at the LHC is discussed in the framework of an extended thermal model approach — the Saha equation —making use of an analogy between the …
2019
(Anti-)Nucleosynthesis in the Little and the Big Bang
Blackboard talk, in collaboration with Francesca Bellini
Equation of state of QCD matter within the Hagedorn bag-like model
The QCD equation of state at zero and finite baryon densities is considered in the framework of a Hagedorn bag-like model with a crossover transition from hadronic matter to quark-gluon plasma. The model, augmented with non-zero masses …
2018
QCD equation of state at finite baryon density with Cluster Expansion Model
QCD equation of state at finite baryon density is studied in the framework of a Cluster Expansion Model (CEM), which is based on a fugacity expansion of the net baryon density. CEM uses the leading two Fourier coefficients from lattice …
Lattice-based QCD equation of state at finite baryon density: Cluster Expansion Model
Lattice QCD methods allow to calculate the thermodynamic observables at finite temperature and imaginary chemical potential. The Wuppertal-Budapest collaboration data [1,2] for the temperature dependence of the leading four Fourier …
2017
van der Waals Interactions in Hadron Resonance Gas: From Nuclear Matter to Lattice QCD
We construct an extension of the ideal hadron resonance gas (HRG) model which includes attractive and repulsive van der Waals (VDW) interactions between hadrons, and analyze different observables with this model [1]. The VDW parameters …
van der Waals Interactions and Hadron Resonance Gas: From Nuclear Matter to Lattice QCD
Extension of the ideal hadron resonance gas (HRG) model is constructed which includes attractive and repulsive van der Waals (VDW) interactions between hadrons [1]. The model employs a novel multi-component quantum statistical VDW …
2016
Analysis of hadron yield data within HRG model with multi-component eigenvolume corrections
The hadron-resonance gas (HRG) model with the hadron type dependent eigenvolume (EV) corrections is employed to fit the hadron yield data of the ALICE and the NA49 collaborations. The influence of the EV corrections is studied within …
Critical fluctuations in models with van der Waals interactions
Particle number fluctuations are considered within the full van der Waals (VDW) equation, which contains both attractive (mean-field) and repulsive (eigenvolume) interactions. Two steps to extend the VDW equation and make it …
