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#61 |
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#62 |
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it should be noted that the Breakthroughs lab, where the op is from, hasn't been going since 2002.
http://en.wikipedia.org/wiki/Breakth...hysics_Program repeated url. |
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#63 |
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instead of jpl you need the glenn research centre. has a bit but not much Thanks Bogsnorkler.... This may help the Rev in his query...includes some squiggly bits..... http://www.sfu.ca/~adebened/funstuff/warpdrive.html |
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#64 |
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Here's a scientific paper by guess who...
Not exactly sure what it all means though..... The Alcubierre Warp Drive: On the Matter of Matter Brendan McMonigal, Geraint F. Lewis, Philip O'Byrne (Submitted on 26 Feb 2012) The Alcubierre warp drive allows a spaceship to travel at an arbitrarily large global velocity by deforming the spacetime in a bubble around the spaceship. Little is known about the interactions between massive particles and the Alcubierre warp drive, or the effects of an accelerating or decelerating warp bubble. We examine geodesics representative of the paths of null and massive particles with a range of initial velocities from -c to c interacting with an Alcubierre warp bubble travelling at a range of globally subluminal and superluminal velocities on both constant and variable velocity paths. The key results for null particles match what would be expected of massive test particles as they approach +/- c. The increase in energy for massive and null particles is calculated in terms of v_s, the global ship velocity, and v_p, the initial velocity of the particle with respect to the rest frame of the origin/destination of the ship. Particles with positive v_p obtain extremely high energy and velocity and become "time locked" for the duration of their time in the bubble, experiencing very little proper time between entering and eventually leaving the bubble. When interacting with an accelerating bubble, any particles within the bubble at the time receive a velocity boost that increases or decreases the magnitude of their velocity if the particle is moving towards the front or rear of the bubble respectively. If the bubble is decelerating, the opposite effect is observed. Thus Eulerian matter is unaffected by bubble accelerations/decelerations. The magnitude of the velocity boosts scales with the magnitude of the bubble acceleration/deceleration. http://arxiv.org/abs/1202.5708 |
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#65 |
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Here's some more for interested parties.........
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Showing results 1 through 25 (of 28 total) for ti ![]() 1. arXiv:1202.5708 [pdf, ps, other] The Alcubierre Warp Drive: On the Matter of Matter Brendan McMonigal, Geraint F. Lewis, Philip O'Byrne Subjects: General Relativity and Quantum Cosmology (gr-qc); Cosmology and Extragalactic Astrophysics (astro-ph.CO); High Energy Astrophysical Phenomena (astro-ph.HE) 2. arXiv:1012.5697 [pdf, ps, other] Reflection-less device allows electromagnetic warp drive T. Ochiai, J.C. Nacher Comments: 8 pages, 7 figures Subjects: Optics (physics.optics) 3. arXiv:1010.5513 [pdf, ps, other] The generalized second law forbids singularity resolution, viable baby universes, traversable wormholes, warp drives, time machines, and negative mass objects Aron C. Wall Comments: 38 pages, 4 figures, discussion of global hyperbolicity revised (4.1, 5.2), more comments on AdS Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th) 4. arXiv:1009.5663 [pdf] Metamaterial-based model of the Alcubierre warp drive Igor I. Smolyaninov Comments: 15 pages, 3 figures, this version is accepted for publication in Phys.Rev.B Journal-ref: Phys.Rev.B84:113103,2011 Subjects: Optics (physics.optics); General Relativity and Quantum Cosmology (gr-qc) 5. arXiv:1001.4960 [pdf, other] On the impossibility of superluminal travel: the warp drive lesson Carlos Barceló, Stefano Finazzi, Stefano Liberati Comments: Second prize of the 2009 FQXi essay contest "What is Ultimately Possible in Physics?" Subjects: General Relativity and Quantum Cosmology (gr-qc); Popular Physics (physics.pop-ph) 6. arXiv:0904.0141 [pdf, ps, other] Semiclassical instability of dynamical warp drives Stefano Finazzi, Stefano Liberati, Carlos Barceló Comments: 16 pages, 4 figures, RevTeX4; typos corrected Journal-ref: PHYSICAL REVIEW D 79, 124017 (2009) Subjects: General Relativity and Quantum Cosmology (gr-qc) 7. arXiv:0807.1957 [pdf, other] Putting the Warp into Warp Drive Richard K Obousy, Gerald Cleaver Comments: 11 pages, 6 figures Journal-ref: Spaceflight, Vol 50, No.4, April 2008 Subjects: Popular Physics (physics.pop-ph) 8. arXiv:0712.1649 [pdf, ps, other] Warp Drive: A New Approach Richard Obousy, Gerald Cleaver Comments: 15 pages. To be published in JBIS Subjects: General Relativity and Quantum Cosmology (gr-qc) 9. arXiv:0710.4474 [pdf, ps, other] Exotic solutions in General Relativity: Traversable wormholes and 'warp drive' spacetimes Francisco S. N. Lobo Comments: 52 pages, 20 figures, RevTex4. Invited chapter to appear in an edited collection 'Classical and Quantum Gravity Research Progress', Nova Science Publishers Journal-ref: Classical and Quantum Gravity Research, 1-78, (2008), Nova Sci. Pub. ISBN 978-1-60456-366-5 Subjects: General Relativity and Quantum Cosmology (gr-qc) 10. arXiv:gr-qc/0512152 [pdf, ps, other] Supersymmetry Breaking Casimir Warp Drive Richard K Obousy Comments: 2 pages, 2 figs. spelling errors corrected Subjects: General Relativity and Quantum Cosmology (gr-qc) 11. arXiv:gr-qc/0412065 [pdf, ps, other] Linearized warp drive and the energy conditions Francisco S. N. Lobo, Matt Visser Comments: 6 pages, contribution to the proceedings of the Spanish Relativity Meeting-2004 (Miraflores de la Sierra, Madrid, September 2004) Subjects: General Relativity and Quantum Cosmology (gr-qc) 12. arXiv:quant-ph/0411153 [pdf, ps, other] Warp-Drive Quantum Computation Mikio Nakahara, Juha J. Vartiainen, Yasushi Kondo, Shogo Tanimura, Kazuya Hata Comments: 4 pages, 2 figures, and 1 table Subjects: Quantum Physics (quant-ph) 13. arXiv:gr-qc/0411096 [pdf, ps, other] The warp drive and antigravity Homer G. Ellis Comments: 6 pages, AMSTeX, 1 Encapsulated PostScript figure Subjects: General Relativity and Quantum Cosmology (gr-qc) 14. arXiv:gr-qc/0408085 [pdf, ps, other] Newtonian limits of warp drive spacetimes Jose Natario Comments: 9 pages; v2: major changes; v3: misprints corrected Journal-ref: Gen.Rel.Grav. 38 (2006) 475-484 Subjects: General Relativity and Quantum Cosmology (gr-qc) 15. arXiv:gr-qc/0406083 [pdf, ps, other] Fundamental limitations on "warp drive" spacetimes Francisco S. N. Lobo, Matt Visser Comments: 18 pages, Revtex4. V2: one reference added, some clarifying comments and discussion, no physics changes, accepted for publication in Classical and Quantum Gravity Journal-ref: Class.Quant.Grav. 21 (2004) 5871-5892 Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th) 16. arXiv ![]() From Wormholes to the Warp Drive: Using theoretical physics to place ultimate bounds on technology William A. Hiscock (Montana State University) Comments: 10 pages LaTeX; to appear in Phi Kappa Phi Forum Subjects: Space Physics (physics.space-ph); Popular Physics (physics.pop-ph) 17. arXiv:gr-qc/0207109 [pdf, ps, other] On the Problems of Hazardous Matter and Radiation at Faster than Light Speeds in the Warp Drive Space-Time C.B. Hart, R. Held, P.K. Hoiland, S. Jenks, F. Loup, D. Martins, J. Nyman, J.P. Pertierra, P.A. Santos, M.A. Shore, R. Sims, M. Stabno, T.O.M. Teage Comments: 9 pages Subjects: General Relativity and Quantum Cosmology (gr-qc) 18. arXiv:gr-qc/0202021 [pdf, ps, other] A causally connected superluminal Warp Drive spacetime F. Loup, R. Held, D. Waite, E. Halerewicz, Jr., M. Stabno, M. Kuntzman, R. Sims Comments: LaTeX2e, 9 pages, 3 eps figures Subjects: General Relativity and Quantum Cosmology (gr-qc) 19. arXiv:gr-qc/0110086 [pdf, ps, other] Warp Drive With Zero Expansion Jose Natario Comments: 8 pages, 3 figures; typos corrected, references added Journal-ref: Class.Quant.Grav. 19 (2002) 1157-1166 Subjects: General Relativity and Quantum Cosmology (gr-qc) 20. arXiv:gr-qc/0107097 [pdf, ps, other] Reduced Total Energy Requirements for a Modified Alcubierre Warp Drive Spacetime F. Loup, D. Waite, E. Halerewicz Jr Comments: 14 pages, LaTeX2e, 1 eps figure Subjects: General Relativity and Quantum Cosmology (gr-qc) 21. arXiv:gr-qc/0009013 [pdf, ps, other] The warp drive: hyper-fast travel within general relativity Miguel Alcubierre Comments: 10 pages, 1 figure. Not previously available in gr-qc Journal-ref: Class.Quant.Grav.11:L73-L77,1994 Subjects: General Relativity and Quantum Cosmology (gr-qc) 22. arXiv:gr-qc/9907026 [pdf, ps, other] On the warp drive space-time Pedro F. Gonzalez-Diaz (IMAFF, CSIC, Madrid) Comments: 7 pages, minor comment on chronology protection added, RevTex, to appear in Phys. Rev. D Journal-ref: Phys.Rev. D62 (2000) 044005 Subjects: General Relativity and Quantum Cosmology (gr-qc) 23. arXiv:gr-qc/9907019 [pdf, ps, other] Null geodesics in the Alcubierre warp drive spacetime: the view from the bridge Chad Clark, William A. Hiscock, Shane L. Larson Comments: 14 pages + 3 figures, REVTeX Journal-ref: Class.Quant.Grav. 16 (1999) 3965-3972 Subjects: General Relativity and Quantum Cosmology (gr-qc) 24. arXiv:gr-qc/9905084 [pdf, ps, other] A `warp drive' with more reasonable total energy requirements Chris Van Den Broeck Comments: 9 pages, 1 figure; error in calculation corrected Journal-ref: Class.Quant.Grav. 16 (1999) 3973-3979 Subjects: General Relativity and Quantum Cosmology (gr-qc) 25. arXiv ![]() Warp drives, wavefronts and superluminality Eric Baird http://arxiv.org/find/grp_physics/1/.../0/1/0/all/0/1 |
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#66 |
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#69 |
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#71 |
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You agree that these hypothesised drives providing propulsion by manipulating space-time would need major changes to the basics of physics then? But give us some time...I'll see if there is anything in any of the 25 scientific papers I listed. And upon thinking further on it, on something as basic as you suggest, why/how would the physicists from NASA/JPL miss it? |
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#72 |
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#73 |
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Been quickly through about half of the 25 papers and found this interesting one...
:::::::::::::::::::::::: The warp drive: hyper-fast travel within general relativity Miguel Alcubierre (Submitted on 5 Sep 2000) It is shown how, within the framework of general relativity and without the introduction of wormholes, it is possible to modify a spacetime in a way that allows a spaceship to travel with an arbitrarily large speed. By a purely local expansion of spacetime behind the spaceship and an opposite contraction in front of it, motion faster than the speed of light as seen by observers outside the disturbed region is possible. The resulting distortion is reminiscent of the ``warp drive'' of science fiction. However, just as it happens with wormholes, exotic matter will be needed in order to generate a distortion of spacetime like the one discussed here. ::::::::::::::::::::::::::::::::::::: A thought just occurred to me. Could "non baryonic" DM fill the bill of exotic matter? Probably not since no one from NSA/JPL seems to have taken it up. |
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#74 |
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Here's another interesting one.
Sure would solve some energy problems! A `warp drive' with more reasonable total energy requirements Chris Van Den Broeck (Submitted on 21 May 1999 (v1), last revised 21 Sep 1999 (this version, v5)) I show how a minor modification of the Alcubierre geometry can dramatically improve the total energy requirements for a `warp bubble' that can be used to transport macroscopic objects. A spacetime is presented for which the total negative mass needed is of the order of a few solar masses, accompanied by a comparable amount of positive energy. This puts the warp drive in the mass scale of large traversable wormholes. The new geometry satisfies the quantum inequality concerning WEC violations and has the same advantages as the original Alcubierre spacetime. |
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#75 |
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Not the way I read it no.... Or maybe I've got it wrong. But if I do have it wrong it would be good to see a clear statement of how it works. |
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#77 |
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#79 |
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Because avoiding the law of conservation of momentum is what the article seems to be talking about when they talk about manipulating gravity.
e.g. they talk about accellerating without applying a reactive force. Well it is not like that If you move inertially then there is no momentum generated so in effect you could scream up to a brick wall... and just before the wall you turn off your generator.... you would then be stationary (it is slightly more complicated in many circumstances) This concept was demonstrated very well in a kids movie "The Flight of the Navigator".... only as an idea However NO LAWS of physics are broken. Rippley's Believe it or NOT, LOL.... Eyes Wide Shut, so it can never be, can it ? BUT IT IS !!!! As an aside The discussion re manipulation of the electrodynamic gravity field is grist for my mill especially cosmic fields |
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#80 |
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I wouldn't think so. Physics would just work as per normal, outside the bubble/warp/whatevah. Momentum is always conserved, except under conditions xyz (which conditions have not yet been observed to occur anywhere within the observable Universe). But that would still seem to me to be a conflict between the hypothesised warp drives and the currently accepted laws of physics. |
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