Krebs' Free form/Chaos Thread

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Mar 10, 2009
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Explosion_Countdown.jpg
 
Mar 16, 2009
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Can apparent superluminal neutrino speeds be explained
as a quantum weak measurement?

If recent measurements [1] suggesting that neutrinos travel faster than light
survive scrutiny, the question of their theoretical interpretation will arise. Here
we discuss the possibility that the apparent superluminality is a quantum
interference effect, that can be interpreted as a weak measurement [2, 3].
Although the available numbers suggest that this explanation is not correct, we
consider the idea worth exploring and reporting – also because it might suggest
interesting experiments, for example on electron neutrinos, about which
relatively little is known. A similar suggestion, though not interpreted as a weak
measurement and not accompanied by numerical estimates, has been proposed
independently [4].
 
Apr 20, 2009
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krebs303 said:
Can apparent superluminal neutrino speeds be explained
as a quantum weak measurement?

If recent measurements [1] suggesting that neutrinos travel faster than light
survive scrutiny, the question of their theoretical interpretation will arise. Here
we discuss the possibility that the apparent superluminality is a quantum
interference effect, that can be interpreted as a weak measurement [2, 3].
Although the available numbers suggest that this explanation is not correct, we
consider the idea worth exploring and reporting – also because it might suggest
interesting experiments, for example on electron neutrinos, about which
relatively little is known. A similar suggestion, though not interpreted as a weak
measurement and not accompanied by numerical estimates, has been proposed
independently [4].

i was sitting in a cafe after reading the news and did some calculations on a napkin and could easily find 18 meters error in gps dilation. i was pretty chuffed to see the almost exact same analysis elsewhere.

wherever the source of the discrepancy turns out to be, it is a fairly safe bet that albert one stone will be vindicated once again.
 
Mar 16, 2009
19,482
2
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gregod said:
i was sitting in a cafe after reading the news and did some calculations on a napkin and could easily find 18 meters error in gps dilation. i was pretty chuffed to see the almost exact same analysis elsewhere.

wherever the source of the discrepancy turns out to be, it is a fairly safe bet that albert one stone will be vindicated once again.

Wow just going to post follow up and you go all soothsayer on me:D

Speedy neutrino mystery likely solved, relativity safe after all

Those weird faster-than-light neutrinos that CERN thought they saw last month may have just gotten slowed down to a speed that'll keep them from completely destroying physics as we know it. In an ironic twist, the very theory that these neutrinos would have disproved may explain exactly what happened.

Back in September, physicists ran an experiment where they sent bunches of neutrinos from Switzerland to Italy and measured how long the particles took to make the trip. Over 15,000 experiments, the neutrinos consistently arrived about 60 nanoseconds early, which means 60 nanoseconds faster than the speed of light. Einstein's special theory of relativity says this should be impossible: nothing can travel faster than light.