dc.contributor.author | Allés, B. | en |
dc.contributor.author | Henty, D. S. | en |
dc.contributor.author | Panagopoulos, Haralambos G. | en |
dc.contributor.author | Parrinello, C. | en |
dc.contributor.author | Pittori, C. | en |
dc.contributor.author | Richards, D. G. | en |
dc.creator | Allés, B. | en |
dc.creator | Henty, D. S. | en |
dc.creator | Panagopoulos, Haralambos G. | en |
dc.creator | Parrinello, C. | en |
dc.creator | Pittori, C. | en |
dc.creator | Richards, D. G. | en |
dc.date.accessioned | 2019-12-02T15:28:32Z | |
dc.date.available | 2019-12-02T15:28:32Z | |
dc.date.issued | 1997 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/58477 | |
dc.description.abstract | We compute the running QCD coupling on the lattice by evaluating two-point and three-point off-shell gluon Green's functions in a fixed gauge and imposing non-perturbative renormalisation conditions on them. Our exploratory study is performed in the quenched approximation at β = 6.0 on 164 and 244 lattices. We show that, for momenta in the range 1.8-2.3 GeV, our coupling runs according to the two-loop asymptotic formula, allowing a precise determination of the corresponding Λ parameter. The role of lattice artifacts and finite-volume effects is carefully analysed and these appear to be under control in the momentum range of interest. Our renormalisation procedure corresponds to a momentum subtraction scheme in continuum field theory, and therefore lattice perturbation theory is not needed in order to match our results to the MS̄ scheme, thus eliminating a major source of uncertainty in the determination of αMS̄. Our method can be applied directly to the unquenched case. © 1997 Elsevier Science B.V. | en |
dc.source | Nuclear Physics B | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031590231&partnerID=40&md5=76908eaa8d51194d6558f2c64eaaa2a4 | |
dc.title | αs from the non-perturbatively renormalised lattice three-gluon vertex | en |
dc.type | info:eu-repo/semantics/article | |
dc.description.volume | 502 | |
dc.description.issue | 1-2 | |
dc.description.startingpage | 325 | |
dc.description.endingpage | 342 | |
dc.author.faculty | Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Φυσικής / Department of Physics | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :68</p> | en |
dc.source.abbreviation | Nucl.Phys.B | en |
dc.contributor.orcid | Panagopoulos, Haralambos G. [0000-0001-9355-6064] | |
dc.gnosis.orcid | 0000-0001-9355-6064 | |