Research output: Contribution to journal › Article › peer-review
Renormalization group and the e{open}-expansion : Representation of the β-function and anomalous dimensions by nonsingular integrals. / Adzhemyan, L. Ts; Kompaniets, M. V.
In: Theoretical and Mathematical Physics, Vol. 169, No. 1, 01.10.2011, p. 1450-1459.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Renormalization group and the e{open}-expansion
T2 - Representation of the β-function and anomalous dimensions by nonsingular integrals
AU - Adzhemyan, L. Ts
AU - Kompaniets, M. V.
PY - 2011/10/1
Y1 - 2011/10/1
N2 - In the framework of the renormalization group and the e{open}-expansion, we propose expressions for the β-function and anomalous dimensions in terms of renormalized one-irreducible functions. These expressions are convenient for numerical calculations. We choose the renormalization scheme in which the quantities calculated using R operations are represented by integrals that do not contain singularities in e{open}. We develop a completely automated calculation system starting from constructing diagrams, determining relevant subgraphs, combinatorial coefficients, etc., up to determining critical exponents. As an example, we calculate the critical exponents of the φ3 model in the order e{open}4.
AB - In the framework of the renormalization group and the e{open}-expansion, we propose expressions for the β-function and anomalous dimensions in terms of renormalized one-irreducible functions. These expressions are convenient for numerical calculations. We choose the renormalization scheme in which the quantities calculated using R operations are represented by integrals that do not contain singularities in e{open}. We develop a completely automated calculation system starting from constructing diagrams, determining relevant subgraphs, combinatorial coefficients, etc., up to determining critical exponents. As an example, we calculate the critical exponents of the φ3 model in the order e{open}4.
KW - critical exponents
KW - e{open}-expansion
KW - multiloop diagrams
KW - renormalization group
UR - http://www.scopus.com/inward/record.url?scp=80655131249&partnerID=8YFLogxK
U2 - 10.1007/s11232-011-0121-z
DO - 10.1007/s11232-011-0121-z
M3 - Article
VL - 169
SP - 1450
EP - 1459
JO - Theoretical and Mathematical Physics (Russian Federation)
JF - Theoretical and Mathematical Physics (Russian Federation)
SN - 0040-5779
IS - 1
ER -
ID: 36313120