Электронный каталог

Статья

Adzhemyan, L.Ts.
Field-Theoretic Analysis of Directed Percolation: Three-Loop Approximation / L.Ts.Adzhemyan, M.Hnatic, E.V.Ivanova, M.V.Kompaniets, T.Lucivjansky, L.Mizisin // Physical Review E [Electronic resource]. – 2023. – Vol.107, No.6. – P.064138. – URL: https://doi.org/10.1103/PhysRevE.107.064138. – Bibliogr.:69.

The directed bond percolation is a paradigmatic model in nonequilibrium statistical physics. It captures essential physical information on the nature of continuous phase transition between active and absorbing states. In this paper, we study this model by means of the field-theoretic formulation with a subsequent renormalization group analysis. We calculate all critical exponents needed for the quantitative description of the corresponding universality class to the third order in perturbation theory. Using dimensional regularization with minimal subtraction scheme, we carry out perturbative calculations in a formally small parameter ɛ, where ɛ=4−d is a deviation from the upper critical dimension dc=4. We use a nontrivial combination of analytical and numerical tools in order to determine ultraviolet divergent parts of Feynman diagrams.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 325.5 - Теория равновесных и неравновесных фазовых переходов
Бюллетени = 48/023