Formation of an ordered phase in neutron star matter

Details Formation of an ordered phase in neutron star matter Formation of an ordered phase in neutron star matter

2001-05-16

arxiv.org/abs/nucl-th/0105037v1

Nuclear Physics A 699 (2002) 939-962

Physics

Nuclear Physics

Nuclear Theory

16 pages, 14 figures, submitted to NPA

Scientific paper

10.1016/S0375-9474(01)01289-1

In this work, we explore the possible formation of ordered phases in hadronic matter, related to the presence of hyperons at high densities. We analyze a microscopic mechanism which can lead to the crystallization of the hyperonic sector by the confinement of the hyperons on the nodes of a lattice. For this purpose, we introduce a simplified model of the hadronic plasma, in which the nuclear interaction between protons, neutrons and hyperons is mediated by meson fields. We find that, for some reasonable sets of values of the model parameters, such ordered phases are energetically favoured as density increases beyond a threshold value.

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