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| bio | website | azimuthproject.org/azimuth/… |
|---|---|---|
| location | Munich, Germany | |
| age | 38 | |
| visits | member for | 2 years, 4 months |
| seen | May 28 '12 at 8:53 | |
| stats | profile views | 228 |
I'm a physics graduate working as an IT-developer and -consultant.
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Jan 7 |
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Analog Hawking radiation FWIF John Baez had a blog post over at Azimuth about this topic: johncarlosbaez.wordpress.com/2011/11/28/liquid-light |
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Oct 10 |
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Quantum Field Theory from a mathematical point of view If I had to guess I'd say that "vague and speculative" may be considered to be "polemical". I remember writing something along these lines two years ago at the nCafe :-) (golem.ph.utexas.edu/category/2009/10/…) |
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Oct 7 |
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Extensions of DHR superselection theory to long range forces Thanks for the tip! I am curious about Bucholz's conlcusion "Origin of infrared difficulties can be traced back to unreasonable idealization of observations covering all of Minkowski space". I remember asking about this idealization in all QFT calculations in an introductory class, but had no idea that this would reappier in such a context :-) |
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Sep 28 |
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Extensions of DHR superselection theory to long range forces Well, that's a good start :-) But I'll leave the question open for now. |
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Sep 26 |
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Status of local gauge invariance in axiomatic quantum field theory @Urs, thanks, so a better question to ask would be how to classify nets coming from certain quantization procedures of gauge theories, or maybe to classify gauge theories which produce Haag-Kastler nets. BTW, I think it is also possible to chat in certain chat rooms here, which would be - maybe - easier for a longer conversation like the one that happened here. |
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Sep 23 |
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Status of local gauge invariance in axiomatic quantum field theory Well, maybe, but how? But please note that the question is not "do we need local gauge symmetry" but "do we need local gauge symmetry in the framework of AQFT", with the latter being somewhat more precise than the former. |
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Sep 23 |
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Status of local gauge invariance in axiomatic quantum field theory Ok, maybe I should explain my own viewpoint of what AQFT is: That it should be able to describe the same phenomena as the standard model. |
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Sep 22 |
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What do theoretical physicists need from computer scientists? @Aaron Sterling: My suggestion is to have a stronger focus even in soft questions in order to adress one area of expertise, not many. Office solutions (word processing etc.) are a whole different topic than numerical algorithms, with people in one area rarely ever talking to people in the other area. (I certainly don't suggest to delete the question, or any answers, I think it is a very good example for a soft question for this private beta phase.) |
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Sep 21 |
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What do theoretical physicists need from computer scientists? I think the question is still too soft in the sense that it asks about very different topics. Answers could be about office solutions like small scale document management systems (like the one behing the arXiv), computational physics and numerical mathematics (e.g. open source libraries for fast sparse linear algebra not in FORTRAN), visualization, gui design, web page design, algorithm development and analysis (which can be and is done by people who have never written a program that compiled in their entire carreer), high performance computing and data analysis (like for the LHC) etc. etc. |
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Sep 16 |
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Significance of the hyperfinite $III_1$ factor for axiomatic quantum field theory Feel free to expand you answer later, even though I will accept it already. |
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Sep 16 |
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Significance of the hyperfinite $III_1$ factor for axiomatic quantum field theory Ok, I somehow missed that paper, although Yngvason is on my watch list :-) |
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May 10 |
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spectral function Please try <a href="math.stackexchange.com/">math stackexchange</a> for math problems and add both the equations and your definition of "spectral function" to your post over there :-) |
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Feb 28 |
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List of good classical physics books +1: The Feynman lectures are for college freshmen taking their first class in classical mechanics and go from there. You'll find both a nice exposition of basic topics and will get a feeling for the enthusiasm of Feynman for physics: Why it is exciting and worthwhile to study. |
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Feb 16 |
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Time evolution in quantum mechanics Is the question about the differentiability of exponential functions of operators? Or about the definition of exponential functions of operators? Or what can be done with the "formal" solution to get more information about the time dependent behaviour of the system? |
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Feb 15 |
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Number of dimensions in string theory and possible link with number theory Sorry for being off-topic, but I thought the relationship I mention interesting enough in the given context in its own right. |
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Feb 14 |
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What is the status of applying numerical analysis to QM/QFT problems A good start place to start is Heinz J. Rothe: "Lattice gauge theories. An introduction." |
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Feb 13 |
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Why is there a search for an exchange particle for gravity? @Daniel: Indirect evidence for gravitational wave emmision: yes. The existence of gravitational waves is not identical to the existence of gravitons, there is one additional conceputal step (gravitational waves exhibit particle wave duality in the quantum realm with the graviton being the particle). It's not one and the same concept. |
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Feb 12 |
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Does string theory provide quantitative experimental predictions? "Extra Dimensions" is not an (Gedanken-)experiment, an Gedankenexperiment would be "what would we see if we had a magnifying glass for the Planck scale" (no extra dimensions, I'd guess, because photons ignore those). |
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Feb 12 |
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Does string theory provide quantitative experimental predictions? What are the predictions on the Planck scale? |
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Feb 12 |
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Does string theory provide quantitative experimental predictions? This question is a duplicate, voting to close. |
