- #36
PeterDonis
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Only if there is no matter in between the two labs.Jorrie said:In the weak field limit (at least), the answer is yes.
If the two labs have matter in between them whose average distribution is similar to that of the universe as a whole, then there is no such thing as "gravitational acceleration" and "cosmological acceleration" canceling each other, because what you are calling "cosmological acceleration" already takes the attractive gravity of the matter into account; it is the resultant of the effects of dark energy and matter, not the effect of dark energy alone.
The only way to get a measure of the acceleration that is purely due to dark energy is to find a void that contains no matter (other than the two labs themselves) and is large enough that you can set up the kind of experiment you have in mind.