| Full text | |
| Author(s): |
Abdalla, Elcio
[1]
;
Afshordi, Niayesh
[2, 3]
;
Fontanini, Michele
[1]
;
Guariento, Daniel C.
[1, 2]
;
Papantonopoulos, Eleftherios
[4]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil
[2] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5 - Canada
[3] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1 - Canada
[4] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens - Greece
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Physical Review D; v. 89, n. 10 MAY 12 2014. |
| Web of Science Citations: | 16 |
| Abstract | |
Both cosmological expansion and black holes are ubiquitous features of our observable Universe, yet exact solutions connecting the two have remained elusive. To this end, we study self-gravitating classical fields within dynamical spherically symmetric solutions that can describe black holes in an expanding universe. After attempting a perturbative approach of a known black-hole solution with scalar hair, we show by exact methods that the unique scalar field action with first-order derivatives that can source shear-free expansion around a black hole requires noncanonical kinetic terms. The resulting action is an incompressible limit of k-essence, otherwise known as the cuscuton theory, and the spacetime it describes is the McVittie metric. We further show that this solution is an exact solution to the vacuum Horava-Lifshitz gravity with anisotropic Weyl symmetry. (AU) | |
| FAPESP's process: | 13/01854-3 - Black holes in an expanding universe and interaction betweend dark matter and dark energy |
| Grantee: | Daniel Carrasco Guariento |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 11/11365-4 - Cosmological theories of matter and dark energy |
| Grantee: | Michele Fontanini |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 10/08267-8 - Thermodynamics and field theory models for dark matter and dark energy |
| Grantee: | Daniel Carrasco Guariento |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |