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Abstract: The relation between collective modes and the phase transition in low densitynuclear matter is examined. The dispersion relations for collective modes in alinear approach are evaluated within a Landau-Fermi liquid scheme by assumingcoexisting phases in thermodynamical equilibrium. Temperature and isospincomposition are taken as relevant parameters. The in-medium nuclear interactionis taken from a recently proposed density functional model. We foundsignificative modifications in the energy spectrum, within certain range oftemperatures and isospin asymmetry, due to the separation of matter intoindependent phases. We conclude that detailed calculations should not neglectthis effect.



Author: R. M. Aguirre, A. L. De Paoli

Source: https://arxiv.org/







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