Here is an idea for a simple deliverable on the topics you mention: maybe it might interest you: computation of group invariants (Casimir, etc.) using tensors and Feynman graphs; there is a book by Cvitanovic "Group theory" on this. I have a closed PR https://github.com/sympy/sympy/pull/1699 on this, see group_factors.py and tests, in which I compute the 4 loop graph in Cvitanovic eq.(1.1). I did only the U(N) case, I did not write Feynman rules, so there is a lot on work on this; one can consider also zero dimensional field theories with 'fields' belonging to some representation.
Well, it is not really simple, but it is much simpler than doing the same in d=4 field theory, it is a useful toy model for that. On Thursday, March 20, 2014 10:48:39 AM UTC+1, Peter Petrov wrote: > > Hi everyone, > > I just found out about GSoC several days ago and it immediately struck me > as being amazing. I have been trying to get involved in the open source > community for a while now, but haven't been able to "find the time". I am > currently in a PhD program working on theoretical physics (string theory), > but have been doing quite a lot of tinkering with computer science in > general lately and it has been really fascinating. GSoC seems like the > exact type of thing to push me and keep me on track to start contributing > seriously to open source projects and get my hands dirty with "real" > coding. I immediately jumped on the SymPy page and started playing around > with the packages. It's a little overwhelming how much is being developed > simultaneously, but I am getting a feel for some of the interesting > features. > > I know it is a long shot to get approved for the GSoC, since I see most > people have started working on proposals so early on, but I am still going > to try and if it doesn't work I will at least have learned enough to start > working on something interesting even without the funding (it would help > though, since I will be able to devote more time to it over the summer). > > I wanted to get some feedback about my ideas, which I realize might not > happen by the deadline (24ish hours left), but even so I would appreciate > it. I am trying to have a decent proposal by then, which might not be very > concrete (more of a conceptual plan) and hoping to have several days after > the melange deadline to develop it fully once I hear from you. I am not > sure how the review process works, but I would appreciate some feedback > from the mentors if you would be willing to consider a proposal modified > after the official deadline, since I see there is a period of several weeks > of review. That is so I know if I should slave away on it the days after > the deadline, or if there's no point. > > I am also trying to fix an issue and submit a pull request by the > deadline, which is not going too well since I have started looking at SymPy > only for the past several days. Fingers crossed though. Anyways I just > uploaded a wiki page with my current general ideas (nothing specific yet, > but I have one more day). Any feedback or references to discussions > surrounding the topics I am looking at would be greatly appreciated. I have > been digging through the doc files and the mailing list, but someone with > experience might be able to point me to something I have not discovered > yet. > > Thank you in advance for any help. This looks like a great community and I > look forward to talking with you more and hopefully contributing. > > Peter Petrov > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/f0eca522-e0b7-4072-93d1-a0723b5271df%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
