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The renormalization group theory is used to the study of the directed bond percolation (Gribov process) near its second-order phase transition between absorbing and active state. We present a numerical calculation of the renormalization group functions in the ∈-expansion where ∈ is the deviation from the upper critical dimension dc = 4. Within this procedure anomalous dimensions γ are expressed in terms of irreducible renormalized Feynman diagrams and thus the calculation of renormalization constants could be entirely skipped. The renormalization group is included by means of the R operation, and for computational purposes we choose the null momentum subtraction scheme.
Язык оригинала | английский |
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Название основной публикации | Mathematical Modeling and Computational Physics, MMCP 2015 |
Издатель | EDP Sciences |
Том | 108 |
ISBN (электронное издание) | 9782759819447 |
DOI | |
Состояние | Опубликовано - 9 фев 2016 |
Событие | Mathematical Modeling and Computational Physics Conference, MMCP 2015 - Stara Lesna, Словакия Продолжительность: 12 июл 2015 → 16 июл 2015 |
конференция | Mathematical Modeling and Computational Physics Conference, MMCP 2015 |
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Страна/Tерритория | Словакия |
Город | Stara Lesna |
Период | 12/07/15 → 16/07/15 |
ID: 9144941