| Thread | Last Post | Replies |
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| MOND & Carmeli | 31 Mar 2005 16:43 GMT | 2 |
Moshe Carmeli claims to have shown that Schwarzschild + expansion will lead to a MOND type acceleration. eg astro-ph/9907244
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| What is backward in "backward volume spin waves"? | 31 Mar 2005 16:42 GMT | 1 |
When people write about "backward volume spin waves" like at: http://www.eltech.ru/kafedrs/fet_eips/persoh1/KOSTYLEV/4.pdf or http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=TEPHEX00004 7000011001350000001&idtype=cvips&gifs=yes
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| What does Landau mean? (From D. Gross Lecture) | 31 Mar 2005 16:42 GMT | 2 |
I browsed through David Gross' Nobel lecture slides (URL below) and noticed the following quote of Landau (1960): "We reach the conclusion that within the limits of formal electrodynamics a point interaction is equivalent, for any intensity
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| a question about non - locality | 31 Mar 2005 16:42 GMT | 14 |
In Bjorken and Drell - QED part 1 I read a statement that one doesnt use a square rooted Hamiltonian (H= SQRT/m*2.c*4+m*2.p*2/) in a wave equation of the Schoedinger type (ih.dpsi/dt=H.psi) because after expanding the root in Taylor series
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| QED Question, how far does the electron move? | 31 Mar 2005 07:54 GMT | 1 |
That's say I have a space with two electrons moving in different directions. ____o> _________________<o
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| Spontaneous particle-antiparticle pair production | 31 Mar 2005 07:54 GMT | 8 |
Given that spontaneous particle-antiparticle pair production can occur at any given point and time is there any possibility that more than one event like this could occur at the same point and time.
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| This Week's Finds in Mathematical Physics (Week 212) | 31 Mar 2005 05:46 GMT | 2 |
Also available at http://math.ucr.edu/home/baez/week212.html March 26, 2005 This Week's Finds in Mathematical Physics - Week 212 John Baez
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| Fifth fundamental "force" | 31 Mar 2005 05:46 GMT | 3 |
So, we know the weak, strong, electromagnetic, and gravitational interactions. But we also know (or at least, I believe) that there is a fifth, (and possibly sixth, seventh, eigth, and so on, to be discovered in thousands to millions of years.) Could the fifth one be what gives ...
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| Holography and positive cosmological constant | 30 Mar 2005 19:52 GMT | 1 |
According to standard lore, the quantization of a diffeomorphism- invariant theory like general relativity can not have local degrees of freedom. Hence the best description of quantum gravity we can hope for is in terms of holographic data living on the boundary of
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| Black hole evaporation | 30 Mar 2005 04:52 GMT | 7 |
This may seem like a stupid question but if black holes radiate, and smaller black holes radiate faster, could a small black hole be used to convert mass into energy with 100% efficiency? What would be the drawbacks to this (besides the obvious of course)?
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| Casimir effect and cosmological constant | 29 Mar 2005 18:16 GMT | 2 |
It is often claimed that the cosmological constant is off by 120 orders of magnitude (or 30 orders on a linear scale). The argument is basically that vacuum has an energy due to zero-point fluctuations, whose reality is proven by the Casimir effect. Now Jaffe claims in
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| Teleportation of photons using entanglement | 29 Mar 2005 09:25 GMT | 34 |
On howstuffworks.com... article on photon teleportation... http://travel.howstuffworks.com/teleportation2.htm The article only goes into a basic description of how entanglement works, and I wasn't able to find a more detailed one anywhere else. I
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| what do i need to learn physics | 29 Mar 2005 09:21 GMT | 3 |
DEAR PHYSICS MY NAME IS BILLY.I HAVE DOWN SYNDROME.I LIKE PHYSICS.PHYSICS TELLS ME THINGS.I LIKE THINGS LIKE TIME.I WANT TO LEARN LOTS OF THINGS.I AM NOT AFRAID.AM I SMART ENOUGH?
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| Curious about response to Fermilab's proposal of unecessariness of dark energy... | 29 Mar 2005 09:21 GMT | 4 |
http://www.fnal.gov/pub/presspass/press_releases/darkenergy_3-16-05.html
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| Work without entropy? | 29 Mar 2005 01:49 GMT | 1 |
Is it possible to do work without an increase in entropy? What is the proof? I am not a student.
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