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The Alcubierre metric defines the warp-drive spacetime.It is a Lorentzian manifold that, if interpreted in the context of general relativity, allows a warp bubble to appear in previously flat spacetime and move away at effectively faster-than-light speed.
The metric creates a region of compressed spacetime in front of the spacecraft and expanded spacetime behind it, forming a "warp bubble." The spacecraft resides within this bubble, moving with the local spacetime without experiencing relativistic time dilation or violating causality. Mathematically, the Alcubierre metric is expressed as:
This metric is sufficient to formulate the vacuum Einstein field equations. If matter is included, described by a stress-energy tensor , then one has the Einstein field equations with matter. On certain regions of spacetime (and possibly the entire spacetime) one can describe the points by a set of coordinates .
Introduction. Something like "In 1994 Alcubierre proposed a hypothetical models of: a space ship drive capable of 'faster than light' travel; a model of space-time (the Alcubierre Metric) which described the 'warp field' which the drive would use. The intro should use pop-science terminology to avoid frightening off the non-specialist reader.
White attracted the attention of the press when he began presenting his ideas at space conventions and publishing proposals for Alcubierre drive concepts. In 2011, he released a paper titled Warp Field Mechanics 101 that outlined an updated concept of Miguel Alcubierre's faster-than-light propulsion concept, including methods to prove the feasibility of the project.
This possibility was first discovered by Willem Jacob van Stockum in 1937 [1] and later confirmed by Kurt Gödel in 1949, [2] who discovered a solution to the equations of general relativity (GR) allowing CTCs known as the Gödel metric; and since then other GR solutions containing CTCs have been found, such as the Tipler cylinder and ...
Miguel Alcubierre Moya (born March 28, 1964) is a Mexican theoretical physicist. [4] Alcubierre is known for the proposed Alcubierre drive , a speculative warp drive by which a spacecraft could achieve faster-than-light travel.
The theoretical study of time travel generally follows the laws of general relativity. Quantum mechanics requires physicists to solve equations describing how probabilities behave along closed timelike curves (CTCs), which are theoretical loops in spacetime that might make it possible to travel through time.