- #1
jaketodd
Gold Member
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Quotes from Cosmic magnetism, curvature and the expansion dynamics:
"Most interestingly, the coupling between magnetism and geometry implies that even weak fields have a significant impact if the curvature contribution is strong."
"The energy scales involved vary from ∼ 100 MeV at the QCD phase transition, to ∼ 100 GeV in the case of electro-weak (EW) physics and closer to the Planck energy scale for inflation or string cosmology."
The LHC does 13 TeV.
"The tension of the field lines means that the magneto-curvature coupling tends to accelerate positively curved regions..."
A quote from A positively curved visualization of gravity?:
"If one imagines a basketball pressed against the rubber sheet, the portion of the sheet in contact with the ball would be positively curved, but the rest would (as before) be negatively curved, one assumes."
So, accelerating positive curvature, as I understand it, would be like amplifying gravity.
Could this phenomenon ever be used for traveling through space? Or, am I completely misunderstanding this whole topic?
An object accelerating in positive curvature continues to accelerate, as long as the curvature is there. Therefore, there would be no limit to the speed achievable. Reminds me of The warp drive: hyper-fast travel within general relativity. However, in that example, the spacetime, which the spaceship is in, is flat.
Thanks!
"Most interestingly, the coupling between magnetism and geometry implies that even weak fields have a significant impact if the curvature contribution is strong."
"The energy scales involved vary from ∼ 100 MeV at the QCD phase transition, to ∼ 100 GeV in the case of electro-weak (EW) physics and closer to the Planck energy scale for inflation or string cosmology."
The LHC does 13 TeV.
"The tension of the field lines means that the magneto-curvature coupling tends to accelerate positively curved regions..."
A quote from A positively curved visualization of gravity?:
"If one imagines a basketball pressed against the rubber sheet, the portion of the sheet in contact with the ball would be positively curved, but the rest would (as before) be negatively curved, one assumes."
So, accelerating positive curvature, as I understand it, would be like amplifying gravity.
Could this phenomenon ever be used for traveling through space? Or, am I completely misunderstanding this whole topic?
An object accelerating in positive curvature continues to accelerate, as long as the curvature is there. Therefore, there would be no limit to the speed achievable. Reminds me of The warp drive: hyper-fast travel within general relativity. However, in that example, the spacetime, which the spaceship is in, is flat.
Thanks!