Although we don’t know very much about Dark Energy, we attribute its effects to the accelerated expansion and even the ultimate fate of our universe. Are you convinced that Dark Energy is real? How can something we know so little about fundamentally have such control over the universe?
Obviously Dark Energy is as real as inflation is, and it is most likely the same thing, just at a significantly different level of its potential energy, which these days is some 10^120 or so less than at the “ignition” of the universe. We assume (and hope) that we have arrived at the minimum level of this inflaton potential – and not a “false” one; if so, the ultimate fate could be a transfer (tunneling) from this false to the true minimum, with devastating results.
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