Zobrazeno 1 - 10
of 77
pro vyhledávání: '"D. V. Shirkov"'
Autor:
D. V. Shirkov
Publikováno v:
Physics of Particles and Nuclei Letters. 10:186-192
The goal of research is to devise a modification of the perturbative QCD that should be regular in the low-energy region and could serve as a practical means for the analysis of data below 1 \GeV up to the IR limit. Recent observation of the four-loo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f7845afebeb7f6b1b667236eed98c1e
https://doi.org/10.1134/s1547477113030138
https://doi.org/10.1134/s1547477113030138
Autor:
D. V. Shirkov
Publikováno v:
Theoretical and Mathematical Physics. 170:239-248
We consider a remarkable symmetry duality that is broken under a phase transition permitting the appearance of superconductivity and superfluidity. This is a wine-bottle rotation symmetry in a semiphenomenological description in the spirit of Ginzbur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8ecc0b32f8c8ac42aafa7b4d231d792
https://doi.org/10.1007/s11232-012-0026-5
https://doi.org/10.1007/s11232-012-0026-5
Publikováno v:
Physics Letters B. 706:340-344
We study the polarized Bjorken sum rule at low momentum transfers in the range 0.22 < Q < 1.73 GeV with the four-loop N 3 LO expression for the coefficient functionCBj(αs) in the framework of the common QCD perturbation theory (PT) and the singulari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::154e242d3911e0538c6ee424abb9dd44
https://doi.org/10.1016/j.physletb.2011.11.023
https://doi.org/10.1016/j.physletb.2011.11.023
Autor:
D. V. Shirkov
Publikováno v:
Proceedings of the Steklov Institute of Mathematics. 272:216-222
This text, on the one hand, is related to the talk delivered at the conference “Gauge Fields. Yesterday, Today, Tomorrow” dedicated to the 70th anniversary of Andrei Slavnov; on the other—in the form of a fairy tale—it summarizes some results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62cd705fc3258ca4b58465f23409de79
https://doi.org/10.1134/s0081543811010202
https://doi.org/10.1134/s0081543811010202
Autor:
D. V. Shirkov
Publikováno v:
Modern Physics Letters A. 24:2797-2801
Short illustrated description of the Professor A.V. Efremov story in life and science on the occasion of his 75th birthday.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9d4ed512e62ecac8c5fe99a50210736
https://doi.org/10.1142/s0217732309001005
https://doi.org/10.1142/s0217732309001005
Autor:
D. V. Shirkov
Publikováno v:
Physics of Particles and Nuclei Letters. 5:489-493
In quantum theory, physical amplitudes are usually presented in the form of Feynman perturbation series in powers of coupling constant $\al .$ However, it is known that these amplitudes are not regular functions at $\alpha=0 .$ For QCD, we propose ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65fe3f28cc653d31f28dca5a6c5137f9
https://doi.org/10.1134/s1547477108060010
https://doi.org/10.1134/s1547477108060010
Autor:
V F Kovalev, D V Shirkov
Publikováno v:
Journal of Physics A: Mathematical and General. 39:8061-8073
Recent advances in generalizing the renorm-group algorithm for boundary value problems of mathematical physics and the related concept of the renorm-group symmetry, previously formulated with reference to models based on differential equations, are r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14a0848f783e39cf992e9866d14b00b0
https://doi.org/10.1088/0305-4470/39/25/s18
https://doi.org/10.1088/0305-4470/39/25/s18
Autor:
D. V. Shirkov
Publikováno v:
Theoretical and Mathematical Physics. 136:893-907
We discuss integral transformations of the QCD renormalization-invariant coupling (“running coupling constant”). Special attention is paid to the Fourier transformation, i.e., to the transition from the space–time to the energy–momentum repre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c81f9d462752b891cc1bd5d66e097f9e
https://doi.org/10.1023/a:1024560420051
https://doi.org/10.1023/a:1024560420051
Autor:
D. V. Shirkov
Publikováno v:
Theoretical and Mathematical Physics. 132:1309-1319
The summary of nonperturbative results for the QCD invariant coupling \(\overline \alpha_s\) obtained by numerical lattice simulations for the path integral and by solution of the approximate Dyson–Schwinger equations reveals a remarkable variety o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14ae531de3fdcb403410d452053579ff
https://doi.org/10.1023/a:1020280323189
https://doi.org/10.1023/a:1020280323189
Autor:
D. V. Shirkov
Publikováno v:
The European Physical Journal C. 22:331-340
The paper is devoted to application of recently devised ghost-free Analytic Perturbation Theory (APT) for analysis of some QCD observables. We start with the discussion of the main problem of the perturbative QCD -- ghost singularities and with the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22b1757a0df2f7c813ae67e4e1fa305e
https://doi.org/10.1007/s100520100794
https://doi.org/10.1007/s100520100794