https://doi.org/10.1140/epjc/s10052-019-7022-y
Regular Article - Theoretical Physics
A causal Schwarzschild-de Sitter interior solution by gravitational decoupling
1
Departament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
2
Institute of Physics and Research Centre of Theoretical Physics and Astrophysics, Faculty of Philosophy and Science, Silesian University in Opava, 746 01, Opava, Czech Republic
3
Departamento de Física, Universidad Simón Bolívar, AP 89000, Caracas, 1080, Venezuela
4
Departamento de Matemáticas, Universidad de Antofagasta, Antofagasta, Chile
5
Dipartimento di Fisica e Astronomia, Alma Mater Università di Bologna, via Irnerio 46, 40126, Bologna, Italy
6
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, I.S. FLAG, viale Berti Pichat 6/2, 40127, Bologna, Italy
* e-mail: jovalle@usb.ve
Received:
24
April
2019
Accepted:
3
June
2019
Published online:
11
June
2019
We employ the minimal geometric deformation approach to gravitational decoupling (MGD-decoupling) in order to build an exact anisotropic version of the Schwarzschild interior solution in a space-time with cosmological constant. Contrary to the well-known Schwarzschild interior, the matter density in the new solution is not uniform and possesses subluminal sound speed. It therefore satisfies all standard physical requirements for a candidate astrophysical object.
© The Author(s), 2019
