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Abstrak :
We study the hyperon effect on equation of state (EOS) in highly dense nuclear matter by introduce the isovector scalar δ-meson [a0(980)] and the cross interactions where the neutron stars is assumed as a cold star (T = 0K) and the calculation is carried out in the frame of relativistic mean-field theory. The Equation of state and matter compound fraction is calculated based on β equilibrium theory by fulfilling the chemical potential equilibrium and the charge neutrality.

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Kami mempelajari efek hyperon terhadap persamaan keadaan materi dari materi nuklir berkerapatan tinggi dengan memperkenalkan meson isovektor skalar δ [a0(980)] dan interaksi cross di mana bintang netron diasumsikan dingin (T = 0K) dan penghitungannya dikerjakan dalam kerangka teori medan relativistik rata-rata. Persamaan keadaan dan fraksi komposisi materi nuklir dihitung berdasarkan teori kesetimbangan-β dengan memenuhi persamaan kesetimbangan potensial kimia dan kesetimbangan muatan.