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Determination of the Equation of State of Dense Matter

Paweł Danielewicz, Roy Lacey and William G. Lynch
Science
New Series, Vol. 298, No. 5598 (Nov. 22, 2002), pp. 1592-1596
Stable URL: http://www.jstor.org/stable/3832841
Page Count: 5
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Determination of the Equation of State of Dense Matter
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Abstract

Nuclear collisions can compress nuclear matter to densities achieved within neutron stars and within core-collapse supernovae. These dense states of matter exist momentarily before expanding. We analyzed the flow of matter to extract pressures in excess of $10^{34}$ pascals, the highest recorded under laboratory-controlled conditions. Using these analyses, we rule out strongly repulsive nuclear equations of state from relativistic mean field theory and weakly repulsive equations of state with phase transitions at densities less than three times that of stable nuclei, but not equations of state softened at higher densities because of a transformation to quark matter.

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