jl_theprofessor t1_iy996cn wrote
Ah yes, the Alcubierre drive, the one that requires more energy than exists in the observable universe to operate.
PEexam2022 t1_iybcogd wrote
So you’re saying there’s a chance
AmIHigh t1_iy9oetp wrote
I swear I read somewhere about one only requiring the energy somehow/someway involved in Jupiter?
the_zelectro t1_iybjz9v wrote
Erik Lentz... Yeah, I emailed that guy.
I identified a potential problem to him: the mass-energy (100(s) of Jupiters, I believe) within his given radius (100m) met the criteria for Einstein's definition of a black hole.
It's a pretty simple equation if anybody wants to check me, btw.
Anyway, the dude told me that this lil' black hole problem was a "key challenge" to all models for warp travel. After that he directed me to his blog, where he was working on it...
I'll give him this: his blog has very complicated mathematics to create beautiful spacetime origami. But... He still doesn't have a solution to this "key challenge".
Tbh, that email turned me off to the whole idea of a warp drive. I'd rather not have a black hole park in our solar system, thanks.
AmIHigh t1_iybmy5n wrote
Haha reddit is great, random stories like this.
Further down someone says darpa made a legit warp bubble on a tiny (nano) scale by accident, and it seems legit, but I guess since it's so tiny it's not at black hole level?
Or it's yet another way to do it for less energy?
the_zelectro t1_iybpdup wrote
Seems they didn't create a bubble, just the exotic conditions that they might need to build one??
And, once again, everything I'm aware of suggests you need regular mass at the density for black holes... Which, obvious problem...
...OR some sort of "exotic mass/matter" that currently doesn't exist...
If this helps: the speed of light being a constant is one of the few things that roots/grounds a scale in our universe. I'm convinced that attempting to break the speed of light is doomed to fail, because you lose the definition of spacetime. The idea of spacetime originates from the fact that light moves at constant speed, and matter cannot exceed it (Einstein's special relativity, to be specific).
Trying to break spacetime's speed of light is like trying to make a water-bed perfectly flat by squeezing down every bump you can find.
One option is you burst the water bed. It ceases to be full of water, as well as ceases to be a bed (analogous to black hole in spacetime -- ceases to adequately represent space or time)...
Other option: you're just pushing down on one end of the bed, only to push another end up, like a game of whack-a-mole.
AmIHigh t1_iyc154h wrote
I really don't know enough to say one way or the other, but they claim it's a real warp bubble, and they could use this research to make another one now that the structure works as predicted. And the picture in the article is supposedly a picture of the real experiment, a real warp bubble.
So seems like they did an experiment, recorded it all, and all the numbers worked out to be a warp bubble accidentally?
https://thedebrief.org/darpa-funded-researchers-accidentally-create-the-worlds-first-warp-bubble/
> “our detailed numerical analysis of our custom Casimir cavities helped us identify a real and manufacturable nano/microstructure that is predicted to generate a negative vacuum energy density such that it would manifest a real nanoscale warp bubble, not an analog, but the real thing.”
>“To be clear, our finding is not a warp bubble analog, it is a real, albeit humble and tiny, warp bubble,” White told The Debrief, “hence the significance.”
and by pure fluke too
>So, whether by pure coincidence or some sort of personal destiny, it appears that one of the handful of engineers on the planet who would immediately know what it was he was looking at when conducting his Casimir cavity research was in the exact right place at the exact right time to notice a striking similarity to his warp drive passion project and his current research, an observation that may have otherwise gone unseen.
Also this one has other details
>Through an incredibly serendipitous happenstance, it took an engineer conducting the research at the exact right time — one who was familiar with warp technology research and knew what he was looking at — to realize that this totally unrelated research had produced a warp bubble.
https://scifi.radio/2021/12/07/darpa-researchers-create-first-genuine-warp-bubble-by-accident/
edit: Lots of edits, sigh.
the_zelectro t1_iycp76m wrote
His model is using negative energy. The only scientific models I know of that allow negative energy to exist in large amounts, without being woo-woo, are within black holes...
Another commenter here put this scientist's credentials into question. Additionally, they linked his original paper here, and the conclusions are pretty weak:
"The analysis also showed a possible intersection with a model developed in the context of general relativity to understand how hyperfast stellar travel might be manifested mathematically. The qualitative correlation would suggest that a chip-scale experiment might be explored to attempt to measure a tiny signature illustrative of the presence of the conjectured phenomenon."
Key takeaways: he doesn't have a mathematical model for FTL travel to work from (he also calls it "hyperfast", which could be an attempt to lower the bar). He only has a "possible intersection" where his experiment only gives a "qualitative correlation". This is weak for such bold claims... And, the phenomenon he's still looking to measure is only "conjectured".
I also saw a picture of his device, and it looks pretty scrappy for such precise electromagnetic measurements. The anomalies he claims to see could attributed be any number of mundane error.
I didn't read the whole thing, due to how weak the conclusion section was... But here's the article: https://idp.springer.com/authorize?response_type=cookie&client_id=springerlink&redirect_uri=https%3A%2F%2Flink.springer.com%2Fcontent%2Fpdf%2F10.1140%2Fepjc%2Fs10052-021-09484-z
Sanchez_U-SOB t1_iyasz8w wrote
If I remember correctly, this was shown by Erik Lentz.
AmIHigh t1_iyav75w wrote
Well that's definitely better than of the known universe. Just gotta keep pecking away at it
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