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PeterDonis's latest activity
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
I don't see the point since what we are discussing is part of determining how an answer to the OP question in this thread can be obtained.
44 minutes ago
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
Yes. No. You are still misstating it. You keep talking as if a given system can only be open or closed. That's not true. A system can...
46 minutes ago
PeterDonis
reacted to
Orodruin's post
in the thread
A
What does Dirac mean by "the suffixes would not balance"?
with
Like
.
It should also be pointed out that both ##\epsilon## are tensor densities of weight -1. The metric determinant is not a scalar, but a...
51 minutes ago
PeterDonis
reacted to
Orodruin's post
in the thread
A
What does Dirac mean by "the suffixes would not balance"?
with
Like
.
Are you sure? Your posts in this thread really suggest that you do not. This is a very particular case. First of all, ##\epsilon## is...
51 minutes ago
PeterDonis
replied to the thread
B
Big Crunch in an infinite, symmetrical, Newtonian universe?
.
After some cleanup, thread is reopened.
53 minutes ago
PeterDonis
replied to the thread
I
If we had a TOE, would we be able to explain why there is something rather than nothing?
.
Thread closed.
55 minutes ago
PeterDonis
replied to the thread
I
If we had a TOE, would we be able to explain why there is something rather than nothing?
.
We won't know the answer to this unless and until we discover a TOE.
56 minutes ago
PeterDonis
reacted to
Ibix's post
in the thread
A
Black Holes Colliding Exactly Head On
with
Like
.
It isn't as simple as "gravitational potential energy", since you can't really define that in the kind of spacetime you get with two...
Today, 1:29 PM
PeterDonis
replied to the thread
A
Black Holes Colliding Exactly Head On
.
Moderator's note: Thread moved to the relativity forum.
Today, 1:29 PM
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
You keep misstating it. Yes, "locally" means in a small region of space and time, and a system can be closed within that small region of...
Today, 1:40 AM
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
That is indeed what one would need in order to address the actual OP question in this thread, which is about how to assess conservation...
Yesterday, 9:34 PM
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
No, because the discussion in this thread is not limited to cases where the system is in an energy eigenstate. So your (2) does not...
Yesterday, 9:33 PM
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
In certain cases, yes. But this thread is about all cases, not just the particular ones where you can get away with this.
Yesterday, 9:32 PM
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
I quoted you explicitly, before responding "thank you for agreeing with my point". You are misstating things. What you mean by "energy...
Yesterday, 9:31 PM
PeterDonis
replied to the thread
I
Conservation of energy and wave function collapse
.
Yes, and as I said, if you take this position, we can never say anything about energy conservation in QM, since we never have a closed...
Yesterday, 7:48 PM
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