Authors: Fernando Loup
Warp Drives are solutions of the Einstein Field Equations that allows superluminal travel within the framework of General Relativity.There are at the present moment two known solutions: The Alcubierre warp drive discovered in $1994$ and the Natario warp drive discovered in $2001$.The warp drive seems to be very attractive because allows interstellar space travel at arbitrarily large speeds avoiding the time dilatation and mass increase paradoxes of Special Relativity. However it suffers from a very serious drawback:Interstellar space is not empty:It is fulfilled with photons and particle dusts and a ship at superluminal speeds would impact these obstacles in highly energetic collisions disrupting the warp field and placing the astronauts in danger.This was pointed out by a great number of authors like Clark,Hiscock,Larson,McMonigal,Lewis,O'Byrne,Barcelo,Finazzi and Liberati. \newline In order to travel significant interstellar distances in reasonable amounts of time a ship would need to attain $200$ times the speed of light but according to Clark,Hiscock and Larson the impact between the ship and a single photon of Cosmic Background Radiation(COBE)would release an amount of energy equal to the photosphere of a star like the Sun.And how many photons of COBE we have per cubic centimeter of space between Earth and Gliese 581 a star at $20$ light-years with potential habitable exoplanets?This serious problem seems to have no solution at first sight. \newline However some years ago Harold White from NASA appeared with an idea that may well solve this problem:According to him the ship never surpass the speed of light but the warp field generates a Lorentz Boost resulting in an apparent superluminal speed as seen by the astronauts on-board the ship and by observers on the Earth while the warp bubble is always below the light speed with the ability to manoeuvre against these obstacles avoiding the lethal collisions. \newline Harold White applied its conclusions for the Alcubierre warp drive. \newline In this work we examine the feasibility of the White idea for the Natario warp drive using clear mathematical arguments and we arrived at the conclusion that the line of reason of Harold White is correct and can be applied to the Natario geometry.
Comments: 18 Pages. it explains the Harold White ideas(NASA) applied to the Natario warp drive spacetime
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[v1] 2013-02-10 10:04:21
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