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Message: <blockquote data-quote="freyar" data-source="post: 6314629" data-attributes="member: 40227">Kind of.  The Alcubierre drive requires negative energy density everywhere (although the amounts get very tiny well inside and well outside the bubble).  The Casimir effect does create some negative energy density but also involves more normal matter -- positive energy density.I agree with the sentiment, but I wonder if this is the right thing for people to be dreaming about.  This Harold White seems to have very few publications and doesn't seem to have presented either his calculations or any experimental results in a normal scientific forum.  That makes me very suspicious that there's not much legitimate there.  Meanwhile, there are many wonderful and amazing ideas in legitimate science people can dream on.Yes, so I'm inclined to think a small amount of money pursuing Alcubierre-inspired propulsion makes some sense.  Maybe there is eventually a way to make it work.  I'm just very skeptical of this particular line of research.It looks to me like White has a company called Eagleworks, which NASA contracts to do this research.  I feel like that probably makes a fair bit of difference, especially on the money end.Well, the doubt about the physics is whether it's possible to realize the types of energy densities required for this class of warp drives.  We've been focusing on the negative energy density, but (without doing some additional calculations myself) I wouldn't be surprised if there are other odd requirements too.</blockquote>

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