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JOURNALS // Proceedings of the Yerevan State University, series Physical and Mathematical Sciences // Archive

Proceedings of the YSU, Physical and Mathematical Sciences, 2016 Issue 3, Pages 42–46 (Mi uzeru273)

Dedicated to 80th anniversary of Academician E. V. Chubaryan
Physics

Hypernuclear matter in compact stars

A. D. Sedrakian

Institute for Theoretical Physics, J. W. Goethe-University, Germany

Abstract: We discuss the recently developed energy density functional for hypernuclear matter, which is based on simultaneous calculation of heavy single-$\Lambda$ hypernuclei and compact stars containing hypernuclear core. The nucleonic matter is described in terms of a density-dependent parametrization of nucleon-meson couplings, whereas the hyperon-meson couplings are deduced from the octet model. We identify the parameter space of hyperon-meson couplings for which massive stellar configurations with $M\le 2.1 M_{\odot}$ exist and at the same time the laboratory $\Lambda$-hypernuclear data can be described.

Keywords: neutron stars, hyperonic matter, equation of state.

Received: 06.07.2016
Accepted: 06.07.2016

Language: English



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