2021
DOI: 10.48550/arxiv.2101.04445
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Static spherically symmetric three-form stars

Bruno J. Barros,
Zahra Haghani,
Tiberiu Harko
et al.

Abstract: We consider interior static and spherically symmetric solutions in a gravity theory that extends the standard Hilbert-Einstein action with a Lagrangian constructed from a three-form field A αβγ , which generates, via the field strength and a potential term, a new component in the total energymomentum tensor of the gravitational system. We formulate the field equations in Schwarzschild coordinates and investigate their solutions numerically for different equations of state of neutron and quark matter, by assumi… Show more

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“…The modified gravity idea has in fact many branches. One proposal deals with the possibility that accelerated expansion of the universe could be produced via additional degrees of freedom, such as scalar [6], vector [7] or higher spin fields [8]. Other possibilities would be to change the gravitational interaction itself, like in massive gravity theories [9] or using non-Riemannian geometries, like Weyl/Cartan theories [10].…”
Section: Introductionmentioning
confidence: 99%
“…The modified gravity idea has in fact many branches. One proposal deals with the possibility that accelerated expansion of the universe could be produced via additional degrees of freedom, such as scalar [6], vector [7] or higher spin fields [8]. Other possibilities would be to change the gravitational interaction itself, like in massive gravity theories [9] or using non-Riemannian geometries, like Weyl/Cartan theories [10].…”
Section: Introductionmentioning
confidence: 99%