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Speaker |
Cisterna, Adolfo |
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Coauthors |
Delsate, Tèrence; Rinaldi, Massimiliano |
| Talk Title |
Horndeski's Stars |
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Abstract |
We consider the sector of Horndeski’s gravity characterized by a coupling between the kinetic scalar field term and the Einstein tensor. Our goal is to find realistic neutron star configurations in this framework. We show that, in a certain limit, there exist solutions that are identical to the Schwarzschild metric outside the star but change considerably inside, where the scalar field is not trivial. We study numerically the equations and find the region of the parameter space where neutron stars exist. We determine their internal pressure and mass-radius relation, and we compare them with standard general relativity models. |
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