Spontaneous scalarization in proto-neutron stars

被引：1
|
作者：
Rahimi, Fahimeh [1 ,2 ]
Rezaei, Zeinab [1 ,2 ]
机构：
[1] Shiraz Univ, Sch Sci, Dept Phys, Shiraz 71454, Iran
[2] Shiraz Univ, Sch Sci, Biruni Observ, Shiraz 71454, Iran
来源：
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 04期
关键词：
PROTONEUTRON STARS; NUCLEAR-MATTER; MASS; SUPERNOVA; EVOLUTION; WINDS;
D O I：
10.1140/epjc/s10052-023-11443-9
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Proto-neutron stars are born when a highly evolved and massive star collapses under gravity. In this paper, we investigate the spontaneous scalarization in protoneutron stars. Based on the scalar tensor theory of gravity as well as the physical conditions in proto-neutron star, we examine the structure of proto-neutron star. To describe the fluid in proto-neutron star, we utilize SU(2) chiral sigma model and the finite temperature extension of the Brueckner-Bethe-Goldstone quantum many-body theory in the Brueckner-Hartree-Fock approximation. Here, we apply the equation of state of proto-neutron stars considering different cases i.e. hot pure neutron matter and hot beta-stable neutron star matter without neutrino trapping as well as with neutrino trapping. The effects of temperature and entropy of proto-neutron stars on the star structure are also studied. Our results confirm that the spontaneous scalarization is affected by different physical conditions in proto-neutron stars.
引用
收藏
页数：10
相关论文
共 50 条
  • [31] Evolution of proto-neutron stars with hadron-quark phase transition
    Bombaci, Ignazio
    Logoteta, Domenico
    Providencia, Constanca
    Vidana, Isaac
    2ND IBERIAN NUCLEAR ASTROPHYSICS MEETING ON COMPACT STARS, 2012, 342
  • [32] Delta-resonances and hyperons in proto-neutron stars and merger remnants
    Armen Sedrakian
    Arus Harutyunyan
    The European Physical Journal A, 58
  • [33] Delta-resonances and hyperons in proto-neutron stars and merger remnants
    Sedrakian, Armen
    Harutyunyan, Arus
    EUROPEAN PHYSICAL JOURNAL A, 2022, 58 (07):
  • [34] Statistical description of complex nuclear phases in supernovae and proto-neutron stars
    Raduta, Ad. R.
    Gulminelli, F.
    PHYSICAL REVIEW C, 2010, 82 (06):
  • [35] Evolution of proto-neutron stars with the hadron-quark phase transition
    Shao, Guo-yun
    PHYSICS LETTERS B, 2011, 704 (04) : 343 - 346
  • [36] Internal composition of proto-neutron stars under strong magnetic fields
    Franzon, B.
    Dexheimer, V.
    Schramm, S.
    PHYSICAL REVIEW D, 2016, 94 (04):
  • [37] Equation of State and Composition of Proto-Neutron Stars and Merger Remnants with Hyperons
    Sedrakian, Armen
    Harutyunyan, Arus
    UNIVERSE, 2021, 7 (10)
  • [38] Symmetry energy effect on hot nuclear matter and proto-neutron stars
    Wu, Xuhao
    Chu, Peng-Cheng
    Ju, Min
    Liu, He
    CHINESE PHYSICS C, 2025, 49 (05)
  • [39] Supernova remnant energetics and magnetars: no evidence in favour of millisecond proto-neutron stars
    Vink, Jacco
    Kuiper, Lucien
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 370 (01) : L14 - L18
  • [40] On the formation of "supermassive" neutron stars and dynamical transition to spontaneous scalarization
    Carlos Degollado, Juan
    Salgado, Marcelo
    Alcubierre, Miguel
    PHYSICS LETTERS B, 2020, 808
12345