कैसे Einstein की field equation ने इन विचित्र आयामों को खोला | Exotic matter for time travel

Exotic matter is a hypothetical kind of matter that has both a negative energy density and a negative pressure or tension that exceeds the energy density. All known forms of matter have positive energy density and pressures or tensions that are always less than the energy density in magnitude. In a stretched rubber band, for example, the energy density is 100 trillion times greater than the tension. A possible source of exotic matter lies in the behavior of certain vacuum states in quantum field theory (see Casimir effect). If such matter exists, or could be created, it might make possible schemes for faster-than-light travel, such as stable wormholes and the Alcubierre warp drive.A more general definition of exotic matter is any kind of matter that is non-baryonic, i.e., not made of baryons - the subatomic particles, such as protons and neutrons, of which ordinary matter is compose
Exotic matter is anything with a stress-energy tensor that violates the above energy conditions.
Exotic matter and its energy condition violations are an important theoretical aspect of studying wormholes and warp drive physics.
It should be pointed out that all of the energy conditions have been violated in practice (except for ANEC which can be violated in principle but not in any way considered to be realistic, at our present level of understanding).
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आखिर कैसे खोले जाते है wormhole के दरवाजे | Exotic matter for time travel
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