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cianfa72's latest activity
cianfa72
replied to the thread
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EPR in Bohm formulation
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What is the precise EPR explict assumption that QM explicitly denies ? Sorry, could you be more specific about this point ? Thanks.
Today, 1:41 AM
cianfa72
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DrChinese's post
in the thread
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EPR in Bohm formulation
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Agreeing 100% with everything that @PeterDonis is saying: EPR said that *any* observable of Bob could be predicted with certainty by an...
Today, 1:38 AM
cianfa72
replied to the thread
I
EPR in Bohm formulation
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You mean a detector aligned along the ##x## axis in Alice lab and another detector aligned along the ##z## axis in Bob lab (each of them...
Yesterday, 12:29 PM
cianfa72
replied to the thread
I
EPR in Bohm formulation
.
Ah ok, so the key point is that, in the last claim, EPR reject a definition of reality for quantities that depends upon the process of...
Yesterday, 11:28 AM
cianfa72
replied to the thread
I
EPR in Bohm formulation
.
Ok, since according to the math of QM there is not a common eigenvector/eigenstate for two non-commuting observable operators. However...
Yesterday, 2:43 AM
cianfa72
reacted to
PeterDonis's post
in the thread
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EPR in Bohm formulation
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The point is that, according to EPR's view of "reality", this should be the case, but QM says it isn't. As I said, EPR thought that...
Monday, 11:31 PM
cianfa72
reacted to
PeterDonis's post
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EPR in Bohm formulation
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According to QM, this doesn't matter. There is no quantum state at all that has definite values for two non-commuting observables. So...
Monday, 11:31 PM
cianfa72
replied to the thread
I
EPR in Bohm formulation
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Sorry, maybe I misinterpreted the paradox. The point is that, starting from Alice spin measurement on her particle, the spin along...
Monday, 2:09 PM
cianfa72
replied to the thread
I
EPR in Bohm formulation
.
He can't since the measurement spin operators along ##z## axis and along ##x## axis for the entire entangled system actually do not...
Monday, 12:02 PM
cianfa72
posted the thread
I
EPR in Bohm formulation
in
Quantum Physics
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Hi, I was reading about the EPR paradox in Bohm simplified formulation. From my understanding the paradox is that Bob is actually able...
Monday, 11:46 AM
cianfa72
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Ibix's post
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Why is it impossible to go faster than the speed of light?
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You are correct, it doesn't take any energy (well, there's friction against one hydrogen atom per cubic meter or so, but that's pretty...
Monday, 9:14 AM
cianfa72
replied to the thread
I
Strange index notation for linear transformation matrix
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Note that Carroll'book, instead, uses only northwest/southeast indices.
Monday, 6:38 AM
cianfa72
reacted to
PeterDonis's post
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Can the expansion of the Universe reduce the energy of a photon to 0?
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No. The "energy" you refer to, which is redshifted by expansion, is the energy measured by a comoving observer who is co-located with...
Sunday, 11:49 PM
cianfa72
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Orodruin's post
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Is Diagrammatic Tensor Notation Widely Used in Mathematics?
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But the point is that abstract tensor notation is not using coordinates. It is not tied to a particular coordinate system. That said, I...
Sunday, 12:09 PM
cianfa72
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Orodruin's post
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Is Diagrammatic Tensor Notation Widely Used in Mathematics?
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Indices do not necessarily equate to components in some coordinate basis. https://en.m.wikipedia.org/wiki/Abstract_index_notation Edit...
Sunday, 12:09 PM
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