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Please expand on your above answers
When you state dimensional collapse, how do you view those dimensions? Space + time + something else? perhaps
You point out that the entropy of the universe is increasing.
but what would happen if the quantum fluctuations were on occasion separated preventing a cancellation the entropy of space would increase.
To try and define the universe as finite, is a nonsense,
Mass-energy and time-energy (aka space-time) is the same energy, but existing in different states, in my view. As mass-energy density falls(entropy -), time-energy density rises(entropy+).
I suggested that the process is following inverse square laws.
In the early universe, I suspect matter dominated every point in space.
Quote from: disinterested on Today at 07:25:09To try and define the universe as finite, is a nonsense,Quote from: andreasva on 16/04/2018 13:06:29Yes, I agree, but I also think a clearer definition of infinite and finite is in order. Space, energy, and time are infinite. There's no doubt in my mind. What is finite is states of energy. Anything that has a beginning cannot be defined as infinite. Our universe, which is made of energy, had a beginning, and could be viewed as a state of energy, therefore, our universe, or our perception of our universe, is finite. Life is finite. Matter is finite. Gravity is finite. Light is finite. I think most importantly though, our perspective of the universe is finite. Infinity implies a dimensionless state with no definable beginning or end. Because all the elements in our universe are dependent upon one another to exist, all of these states of energy had a beginning, and will eventually come to an end. Even light, which is considered infinite, cannot last forever, because the universe will not last forever. That does not rule out the possibility that our universe will undergo a reset of sorts. But, everything that we observe and experience now, will eventually come to an end. That end might mark the beginning. Beyond our perspective of the universe, of course there's more. Infinity is a pretty damn big place. So, if we're talking about an all inclusive universe including things beyond our "perceived" universe, I agree, defining the sum total of everything as finite is total nonsense. We're an infinitesimal cog in a much larger machine. You are not being consistent either the universe is infinite or finite, we can never observe the limit, therefore it is arguably infinite. What limit would you state as the finite measurable limit, then what do have beyond that. Quantum loop gravity allows for repeated big bangs and big crunches. Light does not experience time or distance, from a photons perspective time and space do not exist. Also energy can not be created or destroyed it just changes form. Being part of a cog in a much bigger machine, I want to understand exactly what space is. Looking at vacuum energy reinforces some of what I have been trying to discuss here is one link on the subject https://www.researchgate.net/post/Does_vacuum_energy_really_exist there are many much better.Colin suggested superfluids would be good to look at https://en.wikipedia.org/wiki/Superfluid_vacuum_theory does anyone have an opinion on space as a superfluid.
Yes, I agree, but I also think a clearer definition of infinite and finite is in order. Space, energy, and time are infinite. There's no doubt in my mind. What is finite is states of energy. Anything that has a beginning cannot be defined as infinite. Our universe, which is made of energy, had a beginning, and could be viewed as a state of energy, therefore, our universe, or our perception of our universe, is finite. Life is finite. Matter is finite. Gravity is finite. Light is finite. I think most importantly though, our perspective of the universe is finite. Infinity implies a dimensionless state with no definable beginning or end. Because all the elements in our universe are dependent upon one another to exist, all of these states of energy had a beginning, and will eventually come to an end. Even light, which is considered infinite, cannot last forever, because the universe will not last forever. That does not rule out the possibility that our universe will undergo a reset of sorts. But, everything that we observe and experience now, will eventually come to an end. That end might mark the beginning. Beyond our perspective of the universe, of course there's more. Infinity is a pretty damn big place. So, if we're talking about an all inclusive universe including things beyond our "perceived" universe, I agree, defining the sum total of everything as finite is total nonsense. We're an infinitesimal cog in a much larger machine.
Nope Even the big bang theory stipulates the early universe was quantum fluctuations matter did not come into existence until the universe was expanding.
However I tend to lean towards a zero energy universe as I indicated above, which does not preclude one or several Big Bangs.
You are not being consistent either the universe is infinite or finite, we can never observe the limit, therefore it is arguably infinite. What limit would you state as the finite measurable limit, then what do have beyond that.
Light does not experience time or distance, from a photons perspective time and space do not exist. Also energy can not be created or destroyed it just changes form.
I want to understand exactly what space is.
Quote from: disinterested on Yesterday at 18:03:38Nope Even the big bang theory stipulates the early universe was quantum fluctuations matter did not come into existence until the universe was expanding.I'm starting at maximum expansion or scale. Energy collapsed inward to form the universe. What it looked like, I don't know for sure. I've contemplated the beginning of the universe based on a potential end to our universe. One single black hole representing all the mass energy in the entire universe, surround by time-energy. That's the end, and the beginning of the next cycle. Quote from: disinterested on Yesterday at 18:03:38However I tend to lean towards a zero energy universe as I indicated above, which does not preclude one or several Big Bangs.I lean the same way. I also consider the possibility that our universe perpetually repeats itself.
So, "what is space? It's a tough question. If it is tied in with time, then "time" as a descriptor needs to be included in the description of space.
Hey.....don't forget trying to replicate the Big Bang in a lab when nothing in theory existed before the big bang
[Wave particle duality might suggest that waves exist in this additional dimension but manifest themselves as particles in space time dimension. Hey Ho .
I might have thought the opposite.Waves certainly exist in the 4d world we seem to exist in, but I’ve always viewed the particle side as an effect/property due to the ability of the wave/field being able to transfer energy in the form of momentum.Are there any other ways the extra dimensions might show up?
I don’t yet see enough evidence for non-locality.Feynman did a popular book on qed which will be on amazon. Depends what level you want to start at.