US EditionNew Heavy-Ion Models Reveal 'Primordial Soup' From Universe's Birth
Updated models better match experimental data from Brookhaven and CERN, refining knowledge of quark-gluon plasma properties formed moments after the Big Bang.
- Heikki Mäntysaari and an international group published updated collision models in Physical Review Letters that better align with measurements from Brookhaven National Laboratory and CERN.
- To recreate early-universe conditions, researchers solved nonlinear QCD evolution equations to model how proton and nuclear structure changes with collision energy, clarifying initial conditions for QGP.
- The ATLAS Collaboration has released results showing its first oxygen–oxygen collisions at the LHC, observing jet quenching with a much smaller dijet reduction than the nearly 50% seen in lead collisions.
- The STAR collaboration published a high-precision analysis of proton yields from gold-ion collisions that suggests one part of a critical point signature but awaits another before declaring discovery.
- A new review in Physics Reports by Juan M. Torres-Rincón, Santosh K. Das and Ralf Rapp stresses hadronic interactions in simulations and highlights future experiments at CERN SPS and FAIR.
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Eurek Alert
jyu.fiMore accurate computer models open up the early universe
A researcher Heikki Mäntysaari from the University of Jyväskylä (Finland), has been part of an international research group that has made significant advances in modeling heavy ion collisions. New computer models provide additional information about the matter in the early universe and improve our understanding of the extremely hot and dense nuclear matter.
Improved models of heavy ion collisions reveal new details of early universe nuclear matter
A researcher, Heikki Mäntysaari from the University of Jyväskylä (Finland), has been part of an international research group that has made significant advances in modeling heavy ion collisions. New computer models provide additional information about the matter in the early universe and improve our understanding of the extremely hot and dense nuclear matter. The work is published in the journal Physical Review Letters.
Scientists stunned by record-breaking, watermelon-shaped nucleus
Scientists in Finland have measured the heaviest known nucleus to undergo proton emission, discovering the rare isotope 188-astatine. It exhibits a unique shape and may reveal a new kind of nuclear interaction.
More precise simulations unlock mysteries of the early universe
Berlin, Germany (SPX) Sep 30, 2025 - Researchers from the University of Jyvaskyla, working within an international collaboration, have developed advanced computer models that significantly improve the simulation of heavy ion collisions
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