bhobba's latest activity
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I'll start out by giving some (I hope) interesting references on the topic of sector models, which describe an approach to learning... -
While the theorem was originally proved before GR was even discovered, AFAIK it does not actually require flat spacetime. The two types...
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This is also correct. I don't know if we discussed this particular case in previous threads some time back on the Herglotz-Noether...
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Yes, this is correct. Since the worldlines in the congruence are integral curves of a timelike KVF, you can derive the result...
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That's correct. Note, though, that when you have a star in the center instead of a black hole, the spacetime geometry inside the star is...
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Some additional cautions may be stated: A paper so oriented is not inertial, so you have to imagine some force holding it in place...
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That's not what I said. What I said is that, if you're observing from a distance objects that are at rest fairly close to a black hole's...
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Sure we can get usable data. But you have to take into account the effect of curvature in the spacetime the light travels through, as...
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If the paper were oriented radially, then yes, you would be able to draw a triangle on it whose angles would not add up to 180 degrees...
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It depends on how the paper is oriented and what its state of motion is. But for a piece of paper of ordinary size and a black hole of...
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(1980) AIP Oral History Interviews (OHI) Yang, Chen Ning on 1980 November 1. https://repository.aip.org/yang-chen-ning-1980-november-1...
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Amazing age and amazing number of contributions. I wonder if we will ever know why he was not in terms with Lee.
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https://en.wikipedia.org/wiki/Yang_Chen-Ning ( photo from http://insti.physics.sunysb.edu/~yang/ )...
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bhobba replied to the thread I A very interesting paper on orthodox quantum mechanics.True. But we have the EFT view of QFT, which suggests we really do need to know more about regions beyond which we can currently probe...
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bhobba reacted to Demystifier's post in the thread I Are fields' reality only a relative one? with
Love.
If the fields of the Standard Model are not fundamental, then what is? We don't know. It could be some other fields, or it could be...
