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U.S. Department of Energy Office of Science


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Physicists modeled gold-gold collisions at different energies to probe fluid properties over a range of temperatures and baryon densities. The dashed line represents the region where ordinary nuclear matter is expected to transition to free quarks and gluons.

How Sticky Is Dense Nuclear Matter?

Scientists use a large-scale statistical analysis to extract the viscosity of hot, dense nuclear matter created at different heavy ion collision energies.