Neutron star solutions with curvature induced scalarization in the extended Gauss-Bonnet scalar-tensor theories

被引:58
作者
Doneva, Daniela D. [1 ,2 ]
Yazadjiev, Stoytcho S. [1 ,3 ,4 ]
机构
[1] Eberhard Karls Univ Tubingen, Theoret Astrophys, D-72076 Tubingen, Germany
[2] INRNE Bulgarian Acad Sci, Sofia 1784, Bulgaria
[3] Sofia Univ, Fac Phys, Dept Theoret Phys, Sofia 1164, Bulgaria
[4] Bulgarian Acad Sci, Inst Math & Informat, Acad G Bonchev St 8, BU-1113 Sofia, Bulgaria
来源
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2018年 / 04期
关键词
modified gravity; neutron stars; GRAVITY;
D O I
10.1088/1475-7516/2018/04/011
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the present paper we study models of neutron stars in a class of extended scalar-tensor Gauss-Bonnet (ESTGB) theories for which the scalar degree of freedom is exited only in the strong curvature regime. We show that in the framework of the ESTGB theories under consideration there exist new neutron star solutions which are formed via spontaneous scalarization of the general relativistic neutron stars. In contrast to the spontaneous scalarization in the standard scalar-tensor theories which is induced by the presence of matter, in our case the scalarization is induced by the spacetime curvature.
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页数:14
相关论文
共 22 条
  • [1] Abbott B., 2017, ARXIV 1710 05832 S P
  • [2] [Anonymous], ARXIV171101187
  • [3] [Anonymous], ARXIV171103390
  • [4] [Anonymous], ARXIV171107431
  • [5] [Anonymous], ARXIV171102080
  • [6] Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A
    Baker, T.
    Bellini, E.
    Ferreira, P. G.
    Lagos, M.
    Noller, J.
    Sawicki, I.
    [J]. PHYSICAL REVIEW LETTERS, 2017, 119 (25)
  • [7] Testing general relativity with present and future astrophysical observations
    Berti, Emanuele
    Barausse, Enrico
    Cardoso, Vitor
    Gualtieri, Leonardo
    Pani, Paolo
    Sperhake, Ulrich
    Stein, Leo C.
    Wex, Norbert
    Yagi, Kent
    Baker, Tessa
    Burgess, C. P.
    Coelho, Flavio S.
    Doneva, Daniela
    De Felice, Antonio
    Ferreira, Pedro G.
    Freire, Paulo C. C.
    Healy, James
    Herdeiro, Carlos
    Horbatsch, Michael
    Kleihaus, Burkhard
    Klein, Antoine
    Kokkotas, Kostas
    Kunz, Jutta
    Laguna, Pablo
    Lang, Ryan N.
    Li, Tjonnie G. F.
    Littenberg, Tyson
    Matas, Andrew
    Mirshekari, Saeed
    Okawa, Hirotada
    Radu, Eugen
    O'Shaughnessy, Richard
    Sathyaprakash, Bangalore S.
    Van den Broeck, Chris
    Winther, Hans A.
    Witek, Helvi
    Aghili, Mir Emad
    Alsing, Justin
    Bolen, Brett
    Bombelli, Luca
    Caudill, Sarah
    Chen, Liang
    Degollado, Juan Carlos
    Fujita, Ryuichi
    Gao, Caixia
    Gerosa, Davide
    Kamali, Saeed
    Silva, Hector O.
    Rosa, Joao G.
    Sadeghian, Laleh
    [J]. CLASSICAL AND QUANTUM GRAVITY, 2015, 32 (24)
  • [8] Axial quasinormal modes of Einstein-Gauss-Bonnet-dilaton neutron stars
    Blazquez-Salcedo, Jose Luis
    Manuel Gonzalez-Romero, Luis
    Kunz, Jutta
    Mojica, Sindy
    Navarro-Lerida, Francisco
    [J]. PHYSICAL REVIEW D, 2016, 93 (02)
  • [9] Tensor-scalar gravity and binary-pulsar experiments
    Damour, T
    EspositoFarese, G
    [J]. PHYSICAL REVIEW D, 1996, 54 (02) : 1474 - 1491
  • [10] NONPERTURBATIVE STRONG-FIELD EFFECTS IN TENSOR-SCALAR THEORIES OF GRAVITATION
    DAMOUR, T
    ESPOSITOFARESE, G
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (15) : 2220 - 2223