Reading this post at the vixra bog I got aware of this paper:
Warp Drive Basic Science Written For ”Aficionados”.Chapter II - Jose Natario.
Warp drives are a nice idea. They are inspired by the TV and cinema serial Star Trek of which I am not a particular fan, although I have seen a few chapters and most of the movies.
The key concept is that when you want to to go from a point A to a point B you contract the space in front of you and expand the one behind you. in that way it is possible to go from A to B in an arbitrary small amount of time as far as one can contract/expand the space arbitrarily.
This wordy idea was first formalized by Alcubierre in pure GR framework. The construction of the warp-drive solution requires the use NEC (null energy condition) violating matter as much as wormholes or other exotic solution in GR require.
The last I read (sorry, I don't remember the actual link) of the alcubierre solution was that the back reaction of quantum effects ruined it (or at least it's use as a time machine).
The article I link here focuses in a different kind of warp drive, the Natario warp drive. I didn't previously know of this. I have nether read the full article. What I read looks coherent (as any article in arxiv on the same subject I mean) and I don't see any particular sign of crackpottery. But it is a vixra article, that is, ii is not intended (as far as I know) to any peer to peer review so, well, you know, read it at your own risk. B.T.W. despite the name it is not written for "aficionados": At least not for the kind of aficcionados that ignore genera relativity.
Htese recent days there were an unsuall amount of experiments with surprasing results.
On of them was a result on the possible violation of the CPT symmetry by neutrinos. This was infered by the observed fact that neutrinos and antineutrinos were found t behave differently and have different mass. You can read about in, for example: MINOS: hints of CPT-violation in the neutrino sector
Another surprising result was the observed fact that in muonic atoms the proton radio decreased, contradicting QED (quantum electro dynamics).The most recent blog entry in the subject is written by "mr TGD" (no offense intended) Matti Pitkannen: The incredibly shrinking proton
And last, but not least, the rumor of a 3 sigma detection of ligh (around 115 Gev) higgs bosson in the tevatron. The last entry on the subject is own to Lubos Motl: What a light Higgs would mean for particle physics
A lot of things, and a lot of papers in arxiv today. And I have many task to do tday so I will end the entry here.