| Texto completo | |
| Autor(es): |
Benone, Carolina L.
[1]
;
Crispino, Luis C. B.
[1]
;
Herdeiro, Carlos A. R.
[2, 3, 4]
;
Richartz, Mauricio
[5]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Fed Para, Fac Fis, BR-66075110 Belem, Para - Brazil
[2] Univ Aveiro, Dept Fis, Campus Santiago, P-3810183 Aveiro - Portugal
[3] Ctr Res & Dev Math & Applicat CIDMA, Campus Santiago, P-3810183 Aveiro - Portugal
[4] Univ Lisbon, Inst Super Tecn, Dept Fis, Ctr Astrofis & Gravitacao CTR, Ave Rovisco Pais 1, P-1049001 Lisbon - Portugal
[5] Univ Fed ABC UFABC, Ctr Matemat Comp & Cognicao, BR-09210170 Sao Paulo - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physics Letters B; v. 786, p. 442-447, NOV 10 2018. |
| Citações Web of Science: | 1 |
| Resumo | |
The existence of stationary bound states for the hydrodynamic velocity field between two concentric cylinders is established. We argue that rotational motion, together with a trapping mechanism for the associated field, is sufficient to mitigate energy dissipation between the cylinders, thus allowing the existence of infinitely long lived modes, which we dub stationary clouds. We demonstrate the existence of such stationary clouds for sound and surface waves when the fluid is static and the internal cylinder rotates with constant angular velocity Omega. These setups provide a unique opportunity for the first experimental observation of synchronized stationary clouds. As in the case of bosonic fields around rotating black holes and black hole analogues, the existence of these clouds relies on a synchronization condition between Omega and the angular phase velocity of the cloud. (C) 2018 The Authors. Published by Elsevier B.V. (AU) | |
| Processo FAPESP: | 13/09357-9 - Física e geometria do espaço-tempo |
| Beneficiário: | Alberto Vazquez Saa |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |