Recent content by Athanasius

Thanks for your reply Drakkith. I am digging in more and will do a good deal more reading before asking any more questions regarding this.

I am writing a science fiction book, and have had a lot of fun writing it so far. However, I am facing a technical astronomical problem right now that I would appreciate some advice concerning: I am looking for a plausible scenario in which one of a pair of "fraternal" twin suns is about to...

Please don't be hesitant to comment. I would love to hear your thoughts!

I am writing a book, and since I am a science layman, just wanted to check to see if you find the following paragraph I wrote to be correct from a physics standpoint. The idea here is that "a single, simple substance or field can contain regions which are in different states." I would greatly...

I am not sure I understand you here. Are you simply pointing out the difference between abstract concept and reality, or are you saying that a field can exist without any property that we could abstractly conceive of as dimensionality? I realize that. Perhaps designate was not a clear word...

Forgive me for using unconventional terminology. Doesn't any scalar or quantum field by definition have defining dimensions, and don't fluctuations occur within certain of those dimensions? That is what I meant by field dimensions. In this case, I was referring to whatever metric is chosen...

Hi PeterDonis, thanks for that information. It makes sense to me that the universes within a multiverse continuum would have to be continuums themselves, if you were to have discrete, non-overlapping universes that occupy the same field dimensions. Using a one-dimensional continuum line that...

In multiverse cosmological models, what sort of infinities are usually used? For instance, in many models is it thought that the multiverse is a continuum - an unlistable (uncountable) infinite set comparable to the real numbers, and that it contains universes of Aleph_0 listable infinities...

Enquire always, here are some thoughts I have had regarding your question. I will describe them in purely naturalistic terms because of their implications for cosmology if true. I think it may be possible to have causality without time. For instance, the flow of sound logic on a printed page is...

If entropy is a state of disorder, and low entropy is a state of order, then we have to ask ourselves, "What specific order or information state are we talking about?" There are many conceivable low entropy universes that would not produce life. In fact, most of them would not. In our universe...

Hi Marcus, The Interviewees were Abhay Ashtekar (Penn State University), and Ivan Aguillo (Cambridge University). The Interview is here: . You will find the question and comment at 17:36. Note that Dr. Aguillo uses the word "may" several times, so he does not seem to be speaking with...

Last night I listened to an interview of some LQG bounce cosmologists who stated that the thermodynamics could be "reset" during the quantum bridge phase. That would certainly solve the thermodynamics problem with the old oscillating cosmology thought to exist under GR. Is this derived entirely...

Thanks for all of the replies! Peterdonis, can you elaborate on this a little more for me? What would force an omega=1 finite universe into a closed topology? And why a flat 3-torus? Why not one of the other finite flat closed topologies?

Wouldn't a quantum fluctuation also be needed to initially get a quantum bounce-crunch cycle started?

PeterDonis, it just occurred to me that an infinite fluctuation producing an infinite universe would have to involve an entire infinite field, so only one infinite fluctuation would be possible at a time. Is that how you arrived at the same conclusion?