Author Topic: Negative pressure of vacuum energy density  (Read 18 times)

Anonymous

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Negative pressure of vacuum energy density
« on: 03. February 2021, 15:24:37 »
Maybe I've misinterpreted it, but will the negative pressure from the cosmological constant lead to an accelerating universe, since the minus sign cancels with the minus in FII? Seems a bit strange that a negative pressure causes the universe to accelerate

oelgaroy

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Re: Negative pressure of vacuum energy density
« Reply #1 on: 03. February 2021, 16:20:20 »
It may seem strange. Maybe it is easier to think about the cosmological constant in its Newtonian limit. In that limit, it becomes an additional term which is proportional to the distance, and is repulsive when \( \Lambda > 0 \).