Timeline for Faster-than-light communication using Alcubierre warp drive metric around a single qubit?
Current License: CC BY-SA 3.0
6 events
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| Sep 9, 2022 at 2:17 | comment | added | Attila Janos Kovacs | lurscher, what makes you think that? :"The reason is that the Alcubierre metric assumes that the field is already distributed over the spacetime at previous times before the tube is formed." - As far as I can see, neither Alcubierre's articles nor any other fundamental studies suggest that the distribution of matter along the entire route should be prepared in advance. | |
| Aug 29, 2012 at 3:14 | comment | added | Ron Maimon | The inflaton is not exotic--- the negative stress is just the same as a cosmological constant, and doesn't violate null energy since it cancels on null rays. This is why people use scalars to drive inflation. | |
| Aug 29, 2012 at 2:32 | comment | added | lurscher | @RonMaimon, right, the cosmological constant is not exotic (does not violate the null energy condition). The inflation field was exotic though | |
| Aug 28, 2012 at 2:22 | comment | added | Ron Maimon | you should define clearly what type of exoticness is required for different things. There is no violation of null energy condition from a positive cosmological constant, since it cancels out on null rays. | |
| Aug 27, 2012 at 22:23 | history | edited | lurscher | CC BY-SA 3.0 |
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| Aug 27, 2012 at 22:12 | history | answered | lurscher | CC BY-SA 3.0 |