Neutron stars in general second order scalar-tensor theory: The case of nonminimal derivative coupling
By Adolfo Cisterna, T. Delsate, M. Rinaldi. 2015
142 citations recorded by the source corpus.
We consider the sector of Horndeski's gravity characterized by the coupling between the kinetic scalar field term and the Einstein tensor. We numerically construct neutron star configurations where the external geometry is identical to the Schwarzschild metric but the interior structure is considerably different from standard general relativity. We constrain the only parameter of this model from the requirement that compact configurations exist, and we argue that solutions less compact than neutron stars, such as white dwarfs, are also supported. Therefore, our model provides an explicit modification of general relativity that is astrophysically viable and does not conflict with Solar System tests.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/97ee144eb1d8bfdeb903d5a5620aa69eeb221f94
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In Astronomy and Astrophysics
- Diego Rubiera-García
- Aneta Wojnar
- G. Olmo
- Valerio Faraoni
- Tiberiu Harko
- Francisco S. N. Lobo
- Lavinia Heisenberg
- T. Sotiriou
In Nuclear and High Energy Physics
- Diego Rubiera-García
- Aneta Wojnar
- G. Olmo
- Valerio Faraoni
- Tiberiu Harko
- Francisco S. N. Lobo
- T. Sotiriou
Citations in the corpus
- Stellar structure models in modified theories of gravity: Lessons and challenges (2019, methodology): “The non-minimal derivative coupling sector of this theory given by (105) is considered by Cisterna et al. [370], extending the results discussed in that section to the slowlyrotating case.”