SQM2026

Session

Parallel VII: EoS and Astrophysics

24 Mar 2026, 10:55

Conveners

Parallel VII: EoS and Astrophysics: 7a

• Jacquelyn Noronha-Hostler (Univ. of Illinois Urbana-Champaign)

Parallel VII: EoS and Astrophysics: 7b

• Rene Bellwied (Univ. of Houston)

165. Parameters sensitivity analysis of the Chiral Mean Field Model from Neutron Star Observables

Nikolas Cruz Camacho (University of Illinois Urbana Champaign)

24/03/2026, 10:55

Oral Presentation

We present a Fisher–information–based sensitivity analysis of the Chiral Mean Field (CMF) model parameters using neutron star observables as macroscopic probes of dense QCD matter. Building upon the MUSES framework, we developed a workflow that integrates the CMF, Lepton, and QLIMR modules to generate cold, $\beta$-equilibrated equations of state by smoothly merging a CMF core with the SLy...

14. Improved Description of Hot and Dense Hadronic Matter in an Extended Chiral Mean Field Model with Medium-Modified Mesons

Micheal Kahangirwe (Kent State University)

24/03/2026, 11:15

Oral Presentation

We investigate the equation of state (EoS) for hot and dense hadronic matter within an extended Chiral Mean Field (CMF) model framework that incorporates the interactions of thermally excited mesons, including both non-strange and strange species. In this approach, the in-medium masses of pseudoscalar and vector mesons are evaluated through the explicit chiral symmetry-breaking and...

49. Exploring nuclear structure and sub-nucleonic geometry with multi-particle correlations in Ne-Ne and OO collisions with ALICE at the LHC

Vojtech Machacek (Niels Bohr Institute, Copenhagen)

24/03/2026, 11:35

Oral Presentation

Recent LHC results have demonstrated that small collision systems can exhibit collective behavior reminiscent of that observed in heavy-ion collisions, opening a new frontier for exploring the connection between nuclear structure and collective dynamics at ultrarelativistic energies. In this talk, we present the first measurements of multi-particle cumulants (up to eight-particle) for $v_2$...

230. Hadron resonance gas with density-dependent interactions for neutron stars and heavy-ion collisions

Volodymyr Vovchenko (University of Houston)

24/03/2026, 11:55

Oral Presentation

We formulate a hadron resonance gas model with density-dependent mean field interactions and a generalized excluded volume prescription. The framework, implemented within the open-source Thermal-FIST package, provides a unified description of the hadronic phase in heavy-ion collisions and neutron star matter. We also discuss the interplay of constraints from lattice QCD susceptibilities,...

115. p-p-$\Lambda$ Correlation in 3 GeV Au+Au Collisions with the STAR Detector

Jing Gu (Fudan University)

24/03/2026, 12:15

Oral Presentation

Understanding hyperon-nucleon interactions is crucial for describing strange nuclear matter and for resolving the hyperon puzzle in neutron stars. Three-body forces are expected to play a key role in this context [1]. In this work, we report the measurement of the p-p-$\Lambda$ three-particle correlation functions in Au+Au collisions at $\sqrt{s_{NN}}$=3 GeV. At this beam energy, the system...

40. Probing of Equation-of-State at High Baryon Density with Baryons and (Hyper)nuclei with the PHQMD Model

Joerg Aichelin (SUBATECH), Yingjie Zhou (FAIR, GSI)

25/03/2026, 10:55

Oral Presentation

Authors: Y. Zhou, J. Aichelin, C. Blume, E. Bratkovskaya, G. Coci, N. Herrmann, S. Gläßel, V. Kireyeu, Y. Leung, V. Voronyuk, I. Vassiliev, M. Winn, N. Xu, J. Zhao

The equation-of-state (EoS) at high baryon density is crucial for understanding the behavior of nuclear matter under extreme conditions. The directed flow of protons and $\Lambda$ baryons has long been recognized as a sensitive...

223. Strange Quark Matter as Dark Matter

Francesco Di Clemente (University of Houston)

25/03/2026, 11:15

Oral Presentation

Forty years ago, Witten suggested that dark matter might consist of macroscopic droplets of strange quark matter, formed during a cosmological first-order phase transition. Although lattice QCD at small baryon chemical potential points to a smooth crossover, scenarios in which the early Universe still encounters first-order dynamics remain plausible. We revisit the conditions under which...

60. New femtoscopic constraints on the $\Sigma$N interaction from pp collisions at $\sqrt{s} = 13.6~\mathrm{TeV}$ with ALICE

Henrik Fribert (TU Munchen)

25/03/2026, 11:35

Oral Presentation

The properties of dense astrophysical objects, such as neutron stars, are governed by the equation of state of nuclear matter. At the extreme baryon densities reached in their cores, hyperons are expected to appear as energetically favorable degrees of freedom. Constraining hyperon–nucleon interactions is therefore essential for accurate astrophysical modeling. However, in the case of the...

85. Cosmic Trajectories calculation with state of the art lattice QCD equation of state

Lorenzo Formaggio (University of Houston)

25/03/2026, 11:55

Oral Presentation

We compute the full cosmic trajectories of the early Universe across the QCD phase diagram as the plasma cools from $T\simeq500\,$MeV to $30\,$MeV, assuming $\beta$-equilibrated matter.
The trajectories are obtained by simultaneously solving baryon-number, electric-charge, and lepton-asymmetry conservation, closed by a state-of-the-art lattice-QCD equation of state: a fourth-order Taylor...

168. Connecting heavy-ion collisions to strange dense matter in neutron stars

Yumu Yang (University of Illinois Urbana Champaign)

25/03/2026, 12:15

Oral Presentation

Connecting neutron stars to heavy-ion collisions is essential for constraining the neutron star Equation of State and its interior structure. One such phenomenological tool is the symmetry energy expansion, which characterizes the energy difference between symmetric nuclear matter and pure neutron matter [1]. However, the usual expansion is ill-defined when strangeness is present [2]. We...