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To pull off that seemingly physics-defying trick, this hypothetical drive would need to generate a wave that causes the fabric of space to expand ahead of it and contract behind it. This could create a "that the possibility of the tech could provide new avenues for detecting advanced alien civilizations using instruments like the Laser Interferometer Gravitational-Wave Observatory .
And plenty of questions remain. For one, coming to a stop could be extremely difficult, since passengers aren't able to influence the world outside the warp bubble, as the researchers point out. Another "key challenge is stability," the paper reads. "There is no known equation of state that would maintain the warp drive metric in a stable configuration over time. Therefore, while one can require that initially, the warp bubble is constant, it will quickly evolve away from that state, and, in most cases, the warp fluid and spacetime deformations will disperse or collapse into a central point."make it detectable.
"Overall, the signal is very distinct from the typical compact binary coalescences observed by gravitational wave detectors and more similar to events like the collapse of an unstable neutron star or the head-on collision of two black holes," the paper reads."Further work would be required to understand how generic the signatures are and properly characterize their detectability," the researchers conclude.
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