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What would be the field element for Path Integation of the Einstein - Hilbert Action! by Jay R. Yablon
If one were to use the Einstein-Hilbert action in the usual expression for a path integral, where the metric tensor g_uv (or at least its gravitational field components...
November 25th 09
by Jay R. Yablon Go to last post
6 14
Planetary drift by Dirk Bruere at NeoPax
I have a question that I have no seen asked before, let alone answered. It concerns the effect of quantum randomness (or at least, non deterministic randomness) on planetary...
November 25th 09
by Dirk Bruere at NeoPax Go to last post
7 17
M-theory on the sphere S2?? by arivero@unizar.es
Hello, can anyone point to preprints on compactification of M-theory down to 9 dimensions, via the sphere S2? I am curious about: - how should this compactification be...
November 24th 09
by arivero@unizar.es Go to last post
0 2
Questions about the relationship between the metric tensor and the gravitational field by Jay R. Yablon
In the linear approximation, the metric tensor g^uv is related to the gravitational field h^uv according to (k=sqrt(16 pi G)): g^uv = eta^uv + k h^uv (1) Further, the...
November 20th 09
by Jay R. Yablon Go to last post
3 4
Time arrow and causality by Peter
Dear all, A colleague of mine guesses that the time arrow is caused by the asymmetry of causality (cause and effect are not interchangeable), while the relationship to the...
(Multi-page thread 1 2 3)
November 19th 09
by Daryl McCullough Go to last post
21 41
Double hole experiment by Sandcastle[_2_]
Please do not reply to this post unless you have actually done the experiment. I am looking for first hand information, not something in a text book. In his Messenger...
November 17th 09
by Sandcastle[_2_] Go to last post
0 11
Renormalization Grounded in Classical Field Theory -- Mass Shift vs. by Rock Brentwood
] This is another in a series of articles I've recently posted on this topic. Here, I'm going to lay out the general framework and apply it to scalar fields to (a) show how...
November 17th 09
by Peter Go to last post
1 3
Spasers for Solar Energy Intensification? by EdV[_2_]
I have often wondered if nano technology might allow for the development of a material that would soak up solar energy without focusing mirrors for some period of time . . ....
November 12th 09
by X-Phy[_2_] Go to last post
2 3
Produce Your Own Variable Star Curves With my Streamlined BaTh Program. by Henry Wilson DSc
If you want to know why Einstein is wrong and why so many astronomers are making great fools of themselves this very moment, download my latest variable star program and see...
November 12th 09
by Henry Wilson DSc Go to last post
0 8
What Happens to Fourier Transforms in Curved Spacetime? by Jay R. Yablon
In flat spacetime, one may take the forward Fourier transform, for example, of a vector J^u, according to: J^u(k) = $ d^4x J^u(x) exp (1) Does this change at all in...
(Multi-page thread 1 2 3)
November 9th 09
by Rock Brentwood Go to last post
21 51
Generalized Calculation of Path Integrals for Quadratic Form Actions:Some Questions by Jay R. Yablon
In an exercise linked at: http://jayryablon.files.wordpress.com/2009/11/exact-closed-form-calculation-for-quadratic-form-path-integrals.pdf I have sought to examine the...
November 9th 09
by Jay R. Yablon Go to last post
0 3
Looking for Feedback on an Exercise Calculating the QED Path Integraland Greens Fucntions in Curved Spacetime with Boundary Terms by Jay R. Yablon
In the file linked below, I have laid out an exercise upon which I would appreciate your...
November 7th 09
by Jay R. Yablon Go to last post
5 23
lab equipment to repeat classic QM experiments? by BW
Hi! I would like to hear from an experimental physicist who could help recommend a list of the minimum equipment needed to repeat some of the "classic" QM experiments, for...
2 10
Schrodinger's Equation by Rock Brentwood
From: Arnold Neumaier 2008 September...
November 3rd 09
by DRLunsford Go to last post
9 16
Finitary Path Integrals, Causality & Curved Space-Time by Peter
On 31 Okt., 19:50, Rock Brentwood wrote: .... The action is obtained by summing over the "best" intermediate state S(q0,q2) = S(q0,q1) +...
November 2nd 09
by Peter Go to last post
0 4
Is magnetic flux quantified only in superconductors? by Jarek Duda
While considering superconductors, it is generally accepted that there are created fluxons - some natural number of quantas of magnetic flux. I wanted to ask if the situation...
November 1st 09
by Jarek Duda Go to last post
2 12
Finitary Path Integrals, Causality & Curved Space-Time by Rock Brentwood
On Oct 22, 2:03*am, Koobee Wublee wrote: "There is no known formulation ofpathintegralsto curvedspacetimes." In reply to Yablon's question --...
November 1st 09
by Rock Brentwood Go to last post
1 11
Can QM be derived from classical physics? by Rock Brentwood
The question, more precisely, is this: starting out with classical theory, allow for interactions and/or propagation along spacelike intervals and then pose a "no information...
(Multi-page thread 1 2)
October 31st 09
by maxwell Go to last post
11 23
machine for cutting quartz by Knud Soerensen
Hi I planning some experiments for which I need special cut quartz crystals. Does anyone know where one can buy a machine for cutting quartz ? Thanks. Knud
October 29th 09
by Uncle Al Go to last post
1 10
Wikipedia "Speed of light" article by Army1987[_4_]
I've nominated the Wikipedia article "Speed of light" (http://en.wikipedia.org/wiki/Speed_of_light) for peer review, and another Wikipedian suggested to contact other people...
October 28th 09
by dlzc Go to last post
1 10
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