Questions Upon A Bubble Universe

A line is one dimension. A ring is one dimension bent into two. A plane is two dimensions. A bubble is two dimensions bent into three. The universe appears to be three dimensions bent into four, a hyperbubble.

So the universe could be analogous to a bubble. Is the expansion of this bubble the same as the expansion of the universe after the big bang, and is its accelerating expansion caused by dark energy?

One feature of bubbles is that they pulsate. Could the bubble of the universe be pulsating, thus dark energy going up and down? If so then the pulsations would occur in a specific direction, but also their size would be related to the total size of the universe and so could be used to measure it, depending on which stage of the "pulse" we were currently in.

Are there circumstances where a tiny bubble spontaneously grows, and if so, are there useful analogues between this and the growth of the universe?

What would occur if the bubble of the universe should burst? Real bubbles can formed from films, such as soap bubbles, or be merely spaces in other environments of greater density such as air bubbles in water. The boundary of the latter is formed by the difference between air and water and has no substance itself. This could be considered a pure bubble and would, one expects, be more analogous to a universal bubble.

Can a bubble be more dense than its surroundings? If so would that not be an object, rather than a bubble. People do not refer to a blob of water in space, such as a blob of water aboard the zero-gravity space station, as a bubble, although it does appear to pulsate and react like a bubble. Perhaps this would be a bubble and so the density can either be greater or lesser than the environment, or the same density (as in an air bubble) but enclosed by a membrane. Only the membrane sort can burst as such, as the bursting is defined as a collapse of the membrane. Other bubbles can merely grow or shrink or deform. If they grow, where does the matter within come from, and if shrink, go to? It must come or go from or to the surroundings.

The universe seemed to contain everything inside it to begin with. Are there any bubbles that change in size and density in a similar way? What sort of rules apply to those?

Macroscopic scales are often reflected in microscopic ones. Could particles evolve in terms of fractional dimensions, line to ring to bubble, to hyperbubble?

Mark Sheeky, 18 September 2017