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- W3106202461 abstract "Abstract. We study the effects of the nucleon-nucleon-lambda (NN $ Lambda$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>Λ</mml:mi></mml:math> three-body force on neutron stars. In particular, we consider the NN $ Lambda$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>Λ</mml:mi></mml:math> force recently derived by the Jülich-Bonn-Munich group within the framework of chiral effective field theory at next-to-next-to-leading order. This force, together with realistic nucleon-nucleon, nucleon-nucleon-nucleon and nucleon-hyperon interactions, is used to calculate the equation of state and the structure of neutron stars within the many-body non-relativistic Brueckner-Hartree-Fock approach. Our results show that the inclusion of the NN $ Lambda$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>Λ</mml:mi></mml:math> force leads to an equation of state stiff enough such that the resulting neutron star maximum mass is compatible with the largest currently measured ( $ sim 2 M_odot$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mo>∼</mml:mo><mml:mn>2</mml:mn><mml:msub><mml:mi>M</mml:mi><mml:mo>⊙</mml:mo></mml:msub></mml:mrow></mml:math> neutron star masses. Using a perturbative many-body approach we calculate also the separation energy of the $ Lambda$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>Λ</mml:mi></mml:math> in some hypernuclei finding that the agreement with the experimental data improves for the heavier ones when the effect of the NN $ Lambda$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>Λ</mml:mi></mml:math> force is taken into account." @default.
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- W3106202461 date "2019-11-01" @default.
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- W3106202461 title "Impact of chiral hyperonic three-body forces on neutron stars" @default.
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- W3106202461 doi "https://doi.org/10.1140/epja/i2019-12909-9" @default.
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