کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8182829 | 1527054 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Charged Ï-meson condensation in neutron stars
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Charged Ï-meson condensation in neutron stars Charged Ï-meson condensation in neutron stars](/preview/png/8182829.png)
چکیده انگلیسی
We extend relativistic mean-field models with hadron masses and meson-baryon coupling constants dependent on the scalar field Ï, including hyperons and Î(1232) baryons, to incorporate a possibility of the charged Ï meson condensation in neutron star matter. The influence of the Ïâ condensation on the equation of state proves to be strongly model dependent. In our models of one type (KVORcut-based ones) the Ïâ condensation arises by a second-order phase transition above a critical density and the maximum value of the neutron star mass diminishes only slightly. The matter composition changes more significantly. In our models of other type (MKVOR*-based ones), if the system is considered at fixed density, the Ïâ condensation arises by a second-order phase transition at the baryon density n=nc,Ï(II) and at a slightly higher density n=nc,Ï(I) there occurs a first-order phase transition. In a neutron star matter starting with a density n
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 970, February 2018, Pages 291-315
Journal: Nuclear Physics A - Volume 970, February 2018, Pages 291-315
نویسندگان
E.E. Kolomeitsev, K.A. Maslov, D.N. Voskresensky,