Year: 2016
Type: article
Abstract: In this paper we study static solutions with more general symmetries than the spherical symmetry of the five-dimensional Einstein-Chern-Simons gravity. In this context, we study the coupling of the extra bosonic field h a with ordinary matter which is quantified by the introduction of an energy-momentum tensor field associated with h a . It is found that exist (i) a negative tangential pressure zone around low-mass distributions (μ < μ 1 ) when the coupling constant α is greater than zero; (ii) a maximum in the tangential pressure, which can be observed in the outer region of a field distribution that satisfies μ < μ 2 ; (iii) solutions that behave like those obtained from models with negative cosmological constant. In such a situation, the field h a plays the role of a cosmological constant.
Authors: J. Crisóstomo, F. Gomez, P. Mella, C. Quinzacara, P. Salgado
Institutions: University of Concepción, San Sebastián University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2264458826