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Comment on "Symmetry energy and the isospin dependent equation of state"

A. Ono·P. Danielewicz·W. A. Friedman·W. G. Lynch·M. B. Tsang
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Abstract

In a recent paper, Shetty et al [Phys. Rev. C 70, 011601R (2004)] reported that the experimental isoscaling parameters aexp from several reactions favor the Gogny-AS effective nucleon-nucleon interaction over Gogny interaction. This conclusion is reached by comparing data to Antisymmetrized Molecular Dynamics (AMD) predictions for collisions of calcium isotopes. The specific simulations produce excited fragments at t=300 fm/c before they decay. Sequential decay calculations of the excited fragments suggest that the isoscaling parameter apri from the AMD calculations could be reduced by as much as 50%. We also explore the linear equation used to relate other reactions to the AMD calculations for Ca+Ca collisions. The uncertainty in the relation is larger than the differences between the predicted apri when using Gogny and Gogny-AS interactions.

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A. Ono, P. Danielewicz, W. A. Friedman, W. G. Lynch, M. B. Tsang. 2006-04-27. Comment on "Symmetry energy and the isospin dependent equation of state". https://arxiv.org/abs/nucl-ex/0507018

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