2024-07-30 カーディフ大学
＜関連情報＞
- https://www.cardiff.ac.uk/news/view/2831778-sci-fi-spaceships-could-create-gravitational-wave-bursts-within-range-of-future-detectors,-scientists-say
- https://astro.theoj.org/article/121868-what-no-one-has-seen-before-gravitational-waveforms-from-warp-drive-collapse
誰も見たことがないもの：ワープドライブ崩壊による重力波形 What no one has seen before: gravitational waveforms from warp drive collapse
Katy Clough,Tim Dietrich,Sebastian Khan
Open Journal of Astrophysics Published:July 25, 2024
DOI:https://doi.org/10.33232/001c.121868
Abstract
Despite originating in science fiction, warp drives have a concrete description in general relativity, with Alcubierre first proposing a spacetime metric that supported faster-than-light travel. Whilst there are numerous practical barriers to their implementation in real life, including a requirement for negative energy, computationally, one can simulate their evolution in time given an equation of state describing the matter. In this work, we study the signatures arising from a warp drive “containment failure”, assuming a stiff equation of state for the fluid. We compute the emitted gravitational-wave signal and track the energy fluxes of the fluid. Apart from its rather speculative application to the search for extraterrestrial life in gravitational-wave detector data, this work is interesting as a study of the dynamical evolution and stability of spacetimes that violate the null energy condition. Our work highlights the importance of exploring strange new spacetimes, to (boldly) simulate what no one has seen before.
