PeterDonis's latest activity
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.As far as I can see, your question has already been answered in this thread--by you yourself. @Dale and I have simply concurred with... -
PeterDonis reacted to pines-demon's post in the thread Graduate What are the most fundamental entities in the SM and QFT? with
Like.
OP needs to read: How to Better Define Information in Physics -
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.In the sense of the last paragraph of my post #9, they are, yes. Yes. What do you mean by "after collapse"? I explained in post #4 why...
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.I would say the latter. The last paragraph of my post #9 explains why.
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.Can you give specific examples? Your own answers in post #7 say that, at least for singularity formation, this is not the case for the...
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.One note about this: your usage of the term "original coordinate patch" here assumes that it was a particular one that only covers a...
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.From what I know of the literature, the presentations in MTW and Wald are fairly representative. So I would say that your answers for...
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.Your rephrasings all look fine to me. You referenced MTW and Wald, both of which are classic works that treat this subject (and you...
-
PeterDonis reacted to Demystifier's post in the thread Graduate Super fluids and superconductors at the molecular level with Like.
The conducting electrons interact with lattice atoms. It turns out that the lowest energy state of such interactions realizes when...
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.Thanks, this is very helpful. Some comments below. Your bolded text here appears to imply a causal relationship, but there isn't one...
-
PeterDonis replied to the thread Graduate Struct parallels between curvature behavior/abstract geometric cycles?.Please give specific references. It's not clear from your description what actual physics this "sequence" is referring to.
-
Consider the outer portion of the disk. For each ##n##, consider the annulus with inner radius ##r_n = R(\frac {n-1}n)##. The mass of...
-
There is one more way to look at the problem, to avoid the continuum distribution of matter in the radial direction. Consider ##N##...
-
We have two limits here. The first is the limit involved in the definite integral of a continuous mass distribution across a disk. We...
-
Do you mean a hoop with zero or non-zero extension in the radial direction? In the case of a realistic non-zero extension, it's not...