atyy, if you look on SPIRES, you may find a scanned version of the Weinberg-Witten paper via the KEK library,
http://ccdb4fs.kek.jp/cgi-bin/img_index?8101322
As suggested by Marcus, I have read the whole paper and decided to start a discussion of Kober's paper by asking a few questions.
The paper certaintly presents a very interesting view. Part of it is an extension of Heisenberg's work on unified QFT, that the mass originates from self-interaction...
I happen to know two papers which seems to measure the effect of interference due to Earth's gravitational field through neutron interferometry.
1. Observation of Gravitationallly Induced Quantum Interference
http://www2.phys.canterbury.ac.nz/editorial/COW1975.pdf
2...
I found two papers by Utiyama on this subject,
1. Invariant theoretical interpretation of interaction.
Ryoyu Utiyama Published in Phys.Rev.101:1597-1607,1956.
2. Introduction To The Theory Of General Gauge Fields.
Ryoyu Utiyama. Published in Prog.Theor.Phys.64:2207,1980.
The...
It might help to look at Chapter 3 of Quantum Field Theory by Lewis Ryder. While he doesn't go into formulating gravity in terms of non-Abelian gauge theory. He did nice job drawing parallel between the two formalisms.
Hi Todd. Quantum tunneling is indeed interesting conceptually. If we just look at the Schrodinger equation, it is obvious such a process is possible. But to understand it conceptually is another thing.
One way to think about quantum tunnelling is by perhaps looking at the Schrodinger equation...
Thanks Avodyne, this is very nice indeed. I recall seeing such a gauge transformation involving \gamma_{5} somewhere.
Are there any physical significance to such a transformation?
During my research a while ago, I have unexpectedly derived a "modified Dirac equation" with a \gamma_{5} mass term.
(\gamma^{\mu}\partial_{\mu}+\gamma^{5}m)\psi(x)=0
I was quite surprised, and went about asking a few people. The answer I got is this equation is not new and has been...
I am doing Problem 3.1 from Quantum Theory of Fields by Steven Weinberg regaring the Lippmann-Schwinger Equation. The problem states,
Given a separable interaction,
\langle \alpha_{0}|V|\beta_{0}\rangle=g u_{\alpha}u_{\beta}^{*}
where g is a real coupling constant, and u_{\alpha} is a set of...
Sure experimental verification of string theory is a big issue. But for us theorist, we cannot attack string theory as wrong or inconsistent just because we are unable to probe the Planck scale, there must be a scientific argument behind the claim.
As far as I can see, many skeptics dismisses...
Hi Desh627, perhaps you should be more specific as in what you meant.
Normally one writes down the solution of the Schrodinger equation, then finds the normalisation by computing the norm right?
If I remember correctly, the norm is time independent?
Thanks meopemuk, this looks like a very nice book!
This is true. But I also think having a good book is like having a good teacher. Their style of teaching and ways of conducting research strongly influences the students. This is something you don't learn by doing exercises and solving...
Looking at most textbooks, I found Weinberg's Quantum Theory of Fields to be by far the most superior and I think that's how QFT should be taught as well.
I also think the way Weinberg presenting the subject from first principle is the way to make progress in research in fields such as...
The Sydney GR 2007 in my opinion was very well organised. Unfortunately I was only a graduate student and did not understand most of the talks at all. The highlight of the conference for me was probably the public talk given by Kip Thorne and Roger Penrose. Renate Loll's talk was quite...
I have personally met and talked to Eyo Ita at the GR2007 conference in Sydney last year, he seemed like a very nice and intelligent person.
His paths towards a Ph.D. in theoretical physics was quite unconventional. . He finished his tertiary education at a naval college in America before...