Electronic Resource
Springer
Physics of atomic nuclei
63 (2000), S. 2173-2183
ISSN:
1063-7788
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The coordinate-space behavior of (vector) strong-coupling constant in the background field αB(r) is compared with that in standard perturbation theory αv(r). The numerically calculated two-loop coupling constant αB(r) is shown to exceed αv(r) by 1–5% at very small distances, r≲0.02 fm, and to be in agreement with lattice measurements of the static potential. At large distances, αB(r) approaches the freezing value at r≳0.5 fm. An analytic form of αB(r) is proposed that approximates αB(r) with a precision ≲2% in the region r≳0.5 fm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.1333886
Permalink
Library |
Location |
Call Number |
Volume/Issue/Year |
Availability |