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0 50 10 30 v 2 5 M ar 2 00 6 Feynman graphs for non-Gaussian measures
| Content Provider | Semantic Scholar |
|---|---|
| Author | Djah, Sidi Hamidou Gottschalk, Hanno Ouerdiane, H. |
| Copyright Year | 2009 |
| Abstract | Abstract. Partition and moment functions for a general (not necessarily Gaussian) functional measure that is perturbed by a Gibbs factor are calculated using generalized Feynman graphs. From the graphical calculus, a new notion of Wick ordering arises, that coincides with orthogonal decompositions of Wiener-Itô type only if the measure is Gaussian. Proving a generalized linked cluster theorem, we show that the logarithm of the partition function can be expanded in terms of connected Feynman graphs. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/math-ph/0501030v2.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
