抄録
The nonlinear instability of anti-de Sitter spacetime has recently been established with the striking result that generic initial data collapse to form black holes. This outcome suggests that confined matter might generically collapse, and that collapse could only be halted - at most - by nonlinear bound states. Here, we provide evidence that such a mechanism can operate even in asymptotically flat spacetimes by studying the evolution of the Einstein-Klein-Gordon system for a self-interacting scalar field. We show that (i) configurations which do not collapse promptly can do so after successive reflections off the potential barrier, but (ii) that at intermediate amplitudes and Compton wavelengths, collapse to black holes is replaced by the appearance of oscillating soliton stars, or "oscillatons." Finally, (iii) for very small initial amplitudes, the field disperses away in a manner consistent with power-law tails of massive fields. Minkowski is stable against gravitational collapse. Our results provide one further piece to the rich phenomenology of gravitational collapse and show the important interplay between bound states, blueshift, dissipation and confinement effects.
| 元の言語 | English |
|---|---|
| 記事番号 | 041502 |
| ジャーナル | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| 巻 | 89 |
| 発行部数 | 4 |
| DOI | |
| 出版物ステータス | Published - 2014 2 24 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
これを引用
Collapse of self-interacting fields in asymptotically flat spacetimes : Do self-interactions render Minkowski spacetime unstable? / Okawa, Hirotada; Cardoso, Vitor; Pani, Paolo.
：: Physical Review D - Particles, Fields, Gravitation and Cosmology, 巻 89, 番号 4, 041502, 24.02.2014.研究成果: Article
}
TY - JOUR
T1 - Collapse of self-interacting fields in asymptotically flat spacetimes
T2 - Do self-interactions render Minkowski spacetime unstable?
AU - Okawa, Hirotada
AU - Cardoso, Vitor
AU - Pani, Paolo
PY - 2014/2/24
Y1 - 2014/2/24
N2 - The nonlinear instability of anti-de Sitter spacetime has recently been established with the striking result that generic initial data collapse to form black holes. This outcome suggests that confined matter might generically collapse, and that collapse could only be halted - at most - by nonlinear bound states. Here, we provide evidence that such a mechanism can operate even in asymptotically flat spacetimes by studying the evolution of the Einstein-Klein-Gordon system for a self-interacting scalar field. We show that (i) configurations which do not collapse promptly can do so after successive reflections off the potential barrier, but (ii) that at intermediate amplitudes and Compton wavelengths, collapse to black holes is replaced by the appearance of oscillating soliton stars, or "oscillatons." Finally, (iii) for very small initial amplitudes, the field disperses away in a manner consistent with power-law tails of massive fields. Minkowski is stable against gravitational collapse. Our results provide one further piece to the rich phenomenology of gravitational collapse and show the important interplay between bound states, blueshift, dissipation and confinement effects.
AB - The nonlinear instability of anti-de Sitter spacetime has recently been established with the striking result that generic initial data collapse to form black holes. This outcome suggests that confined matter might generically collapse, and that collapse could only be halted - at most - by nonlinear bound states. Here, we provide evidence that such a mechanism can operate even in asymptotically flat spacetimes by studying the evolution of the Einstein-Klein-Gordon system for a self-interacting scalar field. We show that (i) configurations which do not collapse promptly can do so after successive reflections off the potential barrier, but (ii) that at intermediate amplitudes and Compton wavelengths, collapse to black holes is replaced by the appearance of oscillating soliton stars, or "oscillatons." Finally, (iii) for very small initial amplitudes, the field disperses away in a manner consistent with power-law tails of massive fields. Minkowski is stable against gravitational collapse. Our results provide one further piece to the rich phenomenology of gravitational collapse and show the important interplay between bound states, blueshift, dissipation and confinement effects.
UR - http://www.scopus.com/inward/record.url?scp=84897615194&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897615194&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.89.041502
DO - 10.1103/PhysRevD.89.041502
M3 - Article
AN - SCOPUS:84897615194
VL - 89
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 4
M1 - 041502
ER -