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That seems very counter-intuitive. Energy usually comes from a difference between two things. How could there be uniform energy everywhere? It's paradoxical.
by teaearlgraycold 3y ago
That seems very counter-intuitive. Energy usually comes from a difference between two things. How could there be uniform energy everywhere? It's paradoxical.
- snarkconjecture 3y agoIt makes more sense if you've learned general relativity.
- hinkley 3y agoIf mass has energy, and mass creates space, who is to say that the energy isn’t smeared out across the universe? We’ve detected gravity “waves” now.
- AprilArcus 3y agoWell that's just what the Higgs field is, a scalar field with a nonzero vacuum expectation value. So the existence of a field of this kind isn't just possible in principle, it's been experimentally verified.
- snarkconjecture 3y agoYup. On which note, the Higgs' symmetry breaking should really have changed the vacuum energy density by something orders of magnitude larger than the density of dark energy...
- layer8 3y agoIt might not be everywhere, just by happenstance in the region that contains our observable universe.
- simonh 3y agoLet’s sincerely hope there isn’t a region with lower energy anywhere near us. If the vacuum energy here collapsed to a lower energy level you can kiss all current structured matter goodbye.
- hgtresd 3y ago> Energy usually comes from a difference between two things. Exactly, and letting either of those two things to be 0 is effectively saying you’re measuring between one thing, which is a contradiction.
- pigpang 3y agoUniverse is infinite. It means, that we can zoom up infinitely AND we can zoom down infinitely, which means that space always filled with something, and this something have a temperature.
- marginalia_nu 3y ago> Universe is infinite. It means, that we can zoom up infinitely AND we can zoom down infinitely, which means that space always filled with something, and this something have a temperature. I'm not sure this follows. The set of positive integers is infinite. It means that there's always a larger integer, but it doesn't mean there's always a smaller one, or an infinite number of integers between 1 and 10.
- naveen99 3y agoReplace integers with rationals or reals.
- marginalia_nu 3y agoHaving four legs doesn't follow from something being an animal just because there are examples of animals with four legs. A chicken is also an animal. Having four legs is accidental to being an animal, just as there being an infinite number of elements between any two elements in a set is accidental to its cardinality being infinite.
- naveen99 3y agoChickens have wings at the end of their arms.
- pigpang 3y agoEven in this case, there is infinitely small chance that we are sitting so close to the beginning of everything.
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- hinkley 3y agoThere’s one theory that the Big Bang happened when that energy state changed. That change affected how all matter interacts with each other and a completely new configuration of the universe was born at the new speed of light. And it could change again. We’d all be dead before we knew what was happening.