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<blockquote data-quote="freyar" data-source="post: 6753163" data-attributes="member: 40227">The false vacuum doesn't really &quot;fall into&quot; the true vacuum.&nbsp; It takes a quantum decay process to get to the true vacuum, and it's quite a traumatic (read: likely destroys the universe as we know it) event.&nbsp; So, fortunately, it shouldn't happen very often (like even once in our volume of the universe for many many ages of the universe).&nbsp; But anyway, that doesn't have much to do with dark matter; back to that in a moment.&nbsp; First I want to mention that it is possible in theories with lots of false vacua to look for evidence of the decay of another false vacuum into our false vacuum, and people are looking.&nbsp; I think it's a long shot --- I agree with arguments that say any such evidence is likely pushed farther away than our ability to see it --- but it is a possibility.There are also models that combine dark energy (general models that can explain the accelerating expansion of the universe) and dark matter.&nbsp; Most of these I've seen are highly speculative, and I don't put a lot of credence in them.&nbsp; There are just a lot of ways they can be sick (have subtle but important mathematical inconsistencies).</blockquote>

[QUOTE="freyar, post: 6753163, member: 40227"] The false vacuum doesn't really "fall into" the true vacuum. It takes a quantum decay process to get to the true vacuum, and it's quite a traumatic (read: likely destroys the universe as we know it) event. So, fortunately, it shouldn't happen very often (like even once in our volume of the universe for many many ages of the universe). But anyway, that doesn't have much to do with dark matter; back to that in a moment. First I want to mention that it is possible in theories with lots of false vacua to look for evidence of the decay of another false vacuum into our false vacuum, and people are looking. I think it's a long shot --- I agree with arguments that say any such evidence is likely pushed farther away than our ability to see it --- but it is a possibility. There are also models that combine dark energy (general models that can explain the accelerating expansion of the universe) and dark matter. Most of these I've seen are highly speculative, and I don't put a lot of credence in them. There are just a lot of ways they can be sick (have subtle but important mathematical inconsistencies). [/QUOTE]

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