Description:
Current physics research. (Moderated)
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Yang-Mills Theory Propagator?
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I have linked below for discussion purposes to Chapter VII.1 of Zee's
QFT in a Nutshell, titled "Quantizing Yang-Mills Theory and Lattice
Gauge Theory. [link] I recently, in sections 2 and 3 of the link below, to mathematically
derive an exact propagator of the sort that Zee references in this... more »
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Gravitational Redshift as Measured by the Pound-Rebka-Snider Experiment
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Hello,
I would like you to help me clarify an issue in the Pound ---Rebka-
Snider Experiment verifying the Gravitational Redshift (GR).
According to GR, photons traveling from a higher field region to
a lower field region (equivalently from the bottom to the top of a
tower) get redshifted, namely their frequency decreases (or their... more »
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Canonical Commutation: Is there a flaw in this logic, and if so, where?
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A few years ago I spent a lot of time dealing with the perplexity that the
Canonical Commutation Relation between the space operators X^i and the
momentum operators P^j (in h-bar=1 units):
[X^i, P^j] = i delta^ij with i,j=1,2,3 (1)
does not form a covariant relationship with time x^0=t and energy p^0=E ,... more »
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Molecular Kinetic Energy
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It is universally agreed that heating a gas increases mean molecular
velocity. My question is: "How does heating a gas molecule increase
its kinetic energy?
I am interested in listening to other peoples opinions but I also
appreciate citations when appropriate.
Thanks you for your consideration or contribution,... more »
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Canonical quantization of vector fields?
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I am trying to find the right name for the commutation equation
(d=partial derivative): d^uA^v = i[p^u,A^v] (1)
for a vector field A^v, where p^u is a four-momentum operator. This
relates to the Hamiltonian equation of motion: d^0A^v = i[H,A^v] (2).
What names / verbiage does one usually use to talk about (1)? Can one... more »
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SHRINKING THE UNIVERSE
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I have a simple Relativity question:
Suppose spacetime is being observed using a lattice of
clocks and rulers in the usual fashion. Then suppose
unknown to the observer all the clocks speeded up and the
rulers got longer such that the APPARENT METRIC of the
spacetime became multiplied by a SCALE FACTOR, a(t), such... more »
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Quadrupole
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Hello,
I do not manage to visualize the link betwen the component of the quadrupole Q_ij and the spatial distribution of the electric quadrupole field.
I was told to imagine the Q_ij as an ellipsoid, which I understand (the ellipsoid "radius" in a given direction being the strength of the... more »
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A new kinematic
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[[Mod. note --
A pdf of the article the author cites can found at
[link]
Another relevant article on this topic by the same author is
[link]
-- jt]]
We know that the notion of observational frame of reference has no... more »
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everett interpretation of QM
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[[Mod. note -- I have rewrapped long lines. -- jt]]
The Everett interpretation assumes that there is no wavefunction
collapse - instead everything is unitary.
I'm not sure how this works because objects like me, cars, the
world! are usually a mixture of states, better described by a density... more »
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Review of drafts of three encyclopedic articles
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[Moderator's note: I have set followups to the poster. -P.H.]
[Moderator's note: There seems to be some javascript on the page which causes quite a load. In your own interest, you might want to check whether it is necessary; some people might stop reading if this bothers them, especially with an older browser. -P.H.]... more »
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