Fragile Signs of Criticality in the Nuclear Multifragmentation

Details Fragile Signs of Criticality in the Nuclear Multifragmentation Fragile Signs of Criticality in the Nuclear Multifragmentation

2001-06-08

arxiv.org/abs/nucl-th/0106018v1

Acta Phys.Polon. B33 (2002) 1923-1934

Physics

Nuclear Physics

Nuclear Theory

5 pages, 3 figures

Scientific paper

Deviations from an idealized equilibrium phase transition picture in nuclear multifragmentation is studied in terms of the entropic index. We investigate different heat-capacity features in the canonical quantum statistical model of nuclear multifragmentation generalized in the framework of Tsallis nonextensive thermostatistics. We find that the negative branch of heat capacity observed in quasi-peripheral Au+Au collisions is caused primarily by the non-generic nonextensivity effects.

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