FIESTA 2: parallelizeable multiloop numerical calculations
| Autor: | Smirnov, A. V., Smirnov, V. A., Tentyukov, M. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Comput.Phys.Commun.182:790-803,2011 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.cpc.2010.11.025 |
| Popis: | The program FIESTA has been completely rewritten. Now it can be used not only as a tool to evaluate Feynman integrals numerically, but also to expand Feynman integrals automatically in limits of momenta and masses with the use of sector decompositions and Mellin-Barnes representations. Other important improvements to the code are complete parallelization (even to multiple computers), high-precision arithmetics (allowing to calculate integrals which were undoable before), new integrators and Speer sectors as a strategy, the possibility to evaluate more general parametric integrals. Comment: 31 pages, 5 figures |
| Databáze: | arXiv |
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