Research output: Contribution to journal › Article › peer-review
Multiloop calculations with parametric integration in critical dynamics: the four-loop analytic study of model A of p4 theory. / Adzhemyan, L.T.; Davletbaeva, D.A.; Evdokimov, D.A.; Kompaniets, M.V.
In: Nuclear Physics B, Vol. 1024, 19.02.2026.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Multiloop calculations with parametric integration in critical dynamics: the four-loop analytic study of model A of p4 theory
AU - Adzhemyan, L.T.
AU - Davletbaeva, D.A.
AU - Evdokimov, D.A.
AU - Kompaniets, M.V.
N1 - Export Date: 09 March 2026; Cited By: 0; Correspondence Address: M.V. Kompaniets; Saint Petersburg State University, St. Petersburg, 7/9 Universitetskaya nab., 199034, Russian Federation; email: m.kompaniets@spbu.ru; CODEN: NUPBB
PY - 2026/2/19
Y1 - 2026/2/19
N2 - We perform an analytical four loop calculation of exponent z in model A of critical dynamics in d=4−2ε dimensions. This is the first time such a large order of perturbation theory has been calculated analytically for models of critical dynamics. To do this, we apply the modern method of parametrical integration with hyperlogaritms. We discuss in detail peculiarities of application of this method to critical dynamics, e.g. the problem of linear-irreducible diagrams already present in four loop (contrary to statics where the first linear-irreducible diagram appears in six loop). Copyright © 2026. Published by Elsevier B.V.
AB - We perform an analytical four loop calculation of exponent z in model A of critical dynamics in d=4−2ε dimensions. This is the first time such a large order of perturbation theory has been calculated analytically for models of critical dynamics. To do this, we apply the modern method of parametrical integration with hyperlogaritms. We discuss in detail peculiarities of application of this method to critical dynamics, e.g. the problem of linear-irreducible diagrams already present in four loop (contrary to statics where the first linear-irreducible diagram appears in six loop). Copyright © 2026. Published by Elsevier B.V.
KW - Critical dynamics
KW - Hyperlogarithms
KW - Renormalization group
UR - https://www.mendeley.com/catalogue/267ad741-a305-3b12-bfa5-9be4e3b700df/
U2 - 10.1016/j.nuclphysb.2026.117361
DO - 10.1016/j.nuclphysb.2026.117361
M3 - Article
VL - 1024
JO - Nuclear Physics B
JF - Nuclear Physics B
SN - 0550-3213
ER -
ID: 150124847