YALL IM BACK WITH ASTRONOMY AND I NEED HELP SOOO LETS GET TO IT The Cosmological Constant Problem why is the vacuum energy density is so small yet not zero
Because quantum fluctuations should give vacuum energy, but some unknown mechanism makes almost all of it cancel out leaving a tiny leftover that we observe as dark energy, instead of zero.
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u get it now
kinda
how do quantum fluctuations (should) give vacuum energy light rays and gamma should cancel out anything else and black hole energy is so spread it should also cancel out stuff that small
Because quantum fields can’t be completely turned off,even with no particles present, so empty space still has zero-point energy and gravity responds to that constant energy, which can’t be canceled away, only (almost) balanced by other fields.
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