The cosmological constant is the energy density of space, or vacuum energy, that arises in Albert Einstein's field equations of general relativity. It is closely associated to the concept of dark energy, but, according to quantum field theory, it should also account for all the zero-point energies of quantum fields in space.
Questions tagged [cosmological-constant]
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Why is it so hard to find out the sign of the cosmological constant?
Correct me if I am wrong (it is in fact part of my question :) ) but from the little I know about the cosmological constant, growing existing evidence is still insufficient to tell whether $\Lambda$ is positive, zero or negative.
In case it is true,…
მამუკა ჯიბლაძე
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Cosmological constant vs. quintessence scalar field
I understand the basic idea of these two concepts, but I have question about what they really "are" (a little hard for me to put into words). When one talks about the cosmological constant, it seems as though it is some intrinsic property of space…
Rocket Man
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