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I have a question about Alcubierre Drive, or other Warp Drive concepts.

I have read a lot about FTL warp drive and the massive energy requirements to perform a jump, varying from bigger than the observable universe, to the size of Jupiter. Unfortunately, nowhere I could find the formula for the aforementioned calculation.

Assuming gravity/space manipulation is possible and achievable, I would like to know what would be the approximate energy requirements for a non-FTL warp drive. What would be a rough approximation for the required energy to lift 1 kilogram 1 meter above the ground in 1 second, though gravity/space manipulation? Or at least how different, if so, is the result compared to classical means?

From my understanding, a non-FTL gravity manipulation would still be extremely useful in transportation and space travel.

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  • $\begingroup$ Arbitrarily low, but also you need the proper distribution of it, which may not be feasible. $\endgroup$
    – Slereah
    Mar 4, 2020 at 19:55

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You can check out nasa research on that. They're focusing on micro warp effects.

ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110015936.pdf

Even for FTL the energy requirements are extremely low. That it at first of course, not so good, because the energy conditions needed are in the negative. But with the right distribution and some sofistication one coud get even the absolute value of required energy drop down to a quite practical value. Nonetheless one still needs negative energy which is a bit of a problem no matter how little the amount you need.

the answers probably lie in the nature of the quantum vacuum. Casimir effect is something that could be considered something producing energy. But not necceserely in general relativistic sense.

GR is not a quantum theory anyway, so althaugh it has many exelent predictions, it is fundamentally quite flawed. So I wouldnt give too much attention to its predictions on this kind of stuff. Rather, a quantum source of gravity needs to be understood in order to have the ability to manipulate spacetime in such subtle ways.

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    $\begingroup$ I don’t know of any physicists who believe Sonny White, and his “research” has not to my knowledge appeared in any respectable peer-reviewed physics journals. $\endgroup$
    – G. Smith
    Mar 4, 2020 at 20:51
  • $\begingroup$ It's not a matter of belief, science never is. When did I say I believe the guy. I actually said I don't. Look at the answer. I said GR is not really the model to tackle this.. But this is the only paper on this from what seemed a credible source, (NASA), If you have a problem with it take it up with them $\endgroup$
    – Kugutsu-o
    Mar 4, 2020 at 21:27
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    $\begingroup$ By “believe” I meant “accept White’s research”. The fact that NASA allows this to appear on a NASA site is an embarrassment. $\endgroup$
    – G. Smith
    Mar 4, 2020 at 21:37
  • $\begingroup$ Maybe so. But did you research warp drive metrics? How much do you know about quantum vacuum? $\endgroup$
    – Kugutsu-o
    Mar 4, 2020 at 21:44
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    $\begingroup$ Given that Alcubierre himself thinks that Sonny White’s experiment is not credible, I see no justification for recommendIng it to Physics StackExchange readers. $\endgroup$
    – G. Smith
    Mar 4, 2020 at 22:32

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