- #1
Cathr
- 67
- 3
- TL;DR Summary
- Creating the link between the expansion of the universe and the quantum fluctuations
Recently I was thinking about the Hubble's constant (which, actually, is not Hubble's and not constant...) and wondering: if the universe is expanding at 70 km/s each Mpc, then there's possible to calculate some expansion of space, say from me to a person 1 meter away from me (theoretically).
Given that, I invite you to look at some of my questions:
1. How ridiculous would it be to try to create a device to measure the expansion on earth?
2. Same question, but in space with no massive objects around - or free space.
3. We know about quantum fluctuations and the vacuum energy... isn't it and dark energy the same thing? On different scales?
4. How does the expansion influence time itself?
5. How does gravity influence on the perceived expansion? Would you need an additional dimension to describe space-time? Or did this question go too far? What theories approach this, and what kind of calculations need to be done to simulate this?
6. In question 5 I mentioned other dimensions - it is because, on a big scale, I imagine the universe's force fields and its objects like particles in a fluid, and gravity (kind of) increases viscosity. So for me the existence of an additional dimension comes naturally, this way the expansion may flow from somewhere, and it is not an intrinsic property of space-time.
Given that, I invite you to look at some of my questions:
1. How ridiculous would it be to try to create a device to measure the expansion on earth?
2. Same question, but in space with no massive objects around - or free space.
3. We know about quantum fluctuations and the vacuum energy... isn't it and dark energy the same thing? On different scales?
4. How does the expansion influence time itself?
5. How does gravity influence on the perceived expansion? Would you need an additional dimension to describe space-time? Or did this question go too far? What theories approach this, and what kind of calculations need to be done to simulate this?
6. In question 5 I mentioned other dimensions - it is because, on a big scale, I imagine the universe's force fields and its objects like particles in a fluid, and gravity (kind of) increases viscosity. So for me the existence of an additional dimension comes naturally, this way the expansion may flow from somewhere, and it is not an intrinsic property of space-time.